X Window System Protocol

X Consortium Standard

Robert W. Scheifler

X Consortium, Inc.

X Version 11, Release 7.7

Version 1.0

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━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Table of Contents

Acknowledgements
1. Protocol Formats
    Request Format
    Reply Format
    Error Format
    Event Format
2. Syntactic Conventions
3. Common Types
4. Errors
5. Keyboards
6. Pointers
7. Predefined Atoms
8. Connection Setup
    Connection Initiation
    Server Response
    Server Information
    Screen Information
    Visual Information
9. Requests
    CreateWindow
    ChangeWindowAttributes
    GetWindowAttributes
    DestroyWindow
    DestroySubwindows
    ChangeSaveSet
    ReparentWindow
    MapWindow
    MapSubwindows
    UnmapWindow
    UnmapSubwindows
    ConfigureWindow
    CirculateWindow
    GetGeometry
    QueryTree
    InternAtom
    GetAtomName
    ChangeProperty
    DeleteProperty
    GetProperty
    RotateProperties
    ListProperties
    SetSelectionOwner
    GetSelectionOwner
    ConvertSelection
    SendEvent
    GrabPointer
    UngrabPointer
    GrabButton
    UngrabButton
    ChangeActivePointerGrab
    GrabKeyboard
    UngrabKeyboard
    GrabKey
    UngrabKey
    AllowEvents
    GrabServer
    UngrabServer
    QueryPointer
    GetMotionEvents
    TranslateCoordinates
    WarpPointer
    SetInputFocus
    GetInputFocus
    QueryKeymap
    OpenFont
    CloseFont
    QueryFont
    QueryTextExtents
    ListFonts
    ListFontsWithInfo
    SetFontPath
    GetFontPath
    CreatePixmap
    FreePixmap
    CreateGC
    ChangeGC
    CopyGC
    SetDashes
    SetClipRectangles
    FreeGC
    ClearArea
    CopyArea
    CopyPlane
    PolyPoint
    PolyLine
    PolySegment
    PolyRectangle
    PolyArc
    FillPoly
    PolyFillRectangle
    PolyFillArc
    PutImage
    GetImage
    PolyText8
    PolyText16
    ImageText8
    ImageText16
    CreateColormap
    FreeColormap
    CopyColormapAndFree
    InstallColormap
    UninstallColormap
    ListInstalledColormaps
    AllocColor
    AllocNamedColor
    AllocColorCells
    AllocColorPlanes
    FreeColors
    StoreColors
    StoreNamedColor
    QueryColors
    LookupColor
    CreateCursor
    CreateGlyphCursor
    FreeCursor
    RecolorCursor
    QueryBestSize
    QueryExtension
    ListExtensions
    SetModifierMapping
    GetModifierMapping
    ChangeKeyboardMapping
    GetKeyboardMapping
    ChangeKeyboardControl
    GetKeyboardControl
    Bell
    SetPointerMapping
    GetPointerMapping
    ChangePointerControl
    GetPointerControl
    SetScreenSaver
    GetScreenSaver
    ForceScreenSaver
    ChangeHosts
    ListHosts
    SetAccessControl
    SetCloseDownMode
    KillClient
    NoOperation
10. Connection Close
11. Events
    Input Device events
    Pointer Window events
    Input Focus events
    KeymapNotify
    Expose
    GraphicsExposure
    NoExposure
    VisibilityNotify
    CreateNotify
    DestroyNotify
    UnmapNotify
    MapNotify
    MapRequest
    ReparentNotify
    ConfigureNotify
    GravityNotify
    ResizeRequest
    ConfigureRequest
    CirculateNotify
    CirculateRequest
    PropertyNotify
    SelectionClear
    SelectionRequest
    SelectionNotify
    ColormapNotify
    MappingNotify
    ClientMessage
12. Flow Control and Concurrency
A. KEYSYM Encoding
    Special KEYSYMs
    Latin-1 KEYSYMs
    Unicode KEYSYMs
    Function KEYSYMs
    Vendor KEYSYMs
    Legacy KEYSYMs
B. Protocol Encoding
    Syntactic Conventions
    Common Types
    Errors
    Keyboards
    Pointers
    Predefined Atoms
    Connection Setup
    Requests
    Events
Glossary
Index

Acknowledgements

The primary contributors to the X11 protocol are:

  • Dave Carver (Digital HPW)

  • Branko Gerovac (Digital HPW)

  • Jim Gettys (MIT/Project Athena, Digital)

  • Phil Karlton (Digital WSL)

  • Scott McGregor (Digital SSG)

  • Ram Rao (Digital UEG)

  • David Rosenthal (Sun)

  • Dave Winchell (Digital UEG)

The implementors of initial server who provided useful input are:

  • Susan Angebranndt (Digital)

  • Raymond Drewry (Digital)

  • Todd Newman (Digital)

The invited reviewers who provided useful input are:

  • Andrew Cherenson (Berkeley)

  • Burns Fisher (Digital)

  • Dan Garfinkel (HP)

  • Leo Hourvitz (Next)

  • Brock Krizan (HP)

  • David Laidlaw (Stellar)

  • Dave Mellinger (Interleaf)

  • Ron Newman (MIT)

  • John Ousterhout (Berkeley)

  • Andrew Palay (ITC CMU)

  • Ralph Swick (MIT)

  • Craig Taylor (Sun)

  • Jeffery Vroom (Stellar)

Thanks go to Al Mento of Digital's UEG Documentation Group for formatting this
document.

This document does not attempt to provide the rationale or pragmatics required
to fully understand the protocol or to place it in perspective within a
complete system.

The protocol contains many management mechanisms that are not intended for
normal applications. Not all mechanisms are needed to build a particular user
interface. It is important to keep in mind that the protocol is intended to
provide mechanism, not policy.

Robert W. Scheifler

X Consortium, Inc.

Chapter 1. Protocol Formats

Table of Contents

Request Format
Reply Format
Error Format
Event Format

Request Format

Every request contains an 8-bit major opcode and a 16-bit length field 
expressed in units of four bytes. Every request consists of four bytes of a
header (containing the major opcode, the length field, and a data byte)
followed by zero or more additional bytes of data. The length field defines the
total length of the request, including the header. The length field in a
request must equal the minimum length required to contain the request. If the
specified length is smaller or larger than the required length, an error is
generated. Unused bytes in a request are not required to be zero. Major opcodes
128 through 255 are reserved for extensions. Extensions are intended to contain
multiple requests, so extension requests typically have an additional minor
opcode encoded in the second data byte in the request header. However, the
placement and interpretation of this minor opcode and of all other fields in
extension requests are not defined by the core protocol. Every request on a
given connection is implicitly assigned a sequence number, starting with one,
that is used in replies, errors, and events.

Reply Format

Every reply contains a 32-bit length field expressed in units of four bytes.
Every reply consists of 32 bytes followed by zero or more additional bytes of
data, as specified in the length field. Unused bytes within a reply are not
guaranteed to be zero. Every reply also contains the least significant 16 bits
of the sequence number of the corresponding request.

Error Format

Error reports are 32 bytes long. Every error includes an 8-bit error code. 
Error codes 128 through 255 are reserved for extensions. Every error also
includes the major and minor opcodes of the failed request and the least
significant 16 bits of the sequence number of the request. For the following
errors (see section 4), the failing resource ID is also returned: Colormap, 
Cursor, Drawable, Font, GContext, IDChoice, Pixmap and Window. For Atom errors,
the failing atom is returned. For Value errors, the failing value is returned.
Other core errors return no additional data. Unused bytes within an error are
not guaranteed to be zero.

Event Format

Events are 32 bytes long. Unused bytes within an event are not guaranteed to be
zero. Every event contains an 8-bit type code. The most significant bit in this
code is set if the event was generated from a SendEvent request. Event codes 64
through 127 are reserved for extensions, although the core protocol does not
define a mechanism for selecting interest in such events. Every core event
(with the exception of KeymapNotify) also contains the least significant 16
bits of the sequence number of the last request issued by the client that was
(or is currently being) processed by the server.

Chapter 2. Syntactic Conventions

The rest of this document uses the following syntactic conventions.

  • The syntax {...} encloses a set of alternatives.

  • The syntax [...] encloses a set of structure components.

  • In general, TYPEs are in uppercase and AlternativeValues are capitalized.

  • Requests in section 9 are described in the following format:

    RequestName
         arg1: type1
         ...
         argN: typeN
       ▶
         result1: type1
         ...
         resultM: typeM

         Errors: kind1, ..., kindK

         Description.

    If no ▶ is present in the description, then the request has no reply (it is
    asynchronous), although errors may still be reported. If ▶+ is used, then
    one or more replies can be generated for a single request.

  • Events in section 11 are described in the following format:

    EventName
         value1: type1
         ...
         valueN: typeN

         Description.

Chapter 3. Common Types

┌────────────┬────────────────────────────────────────────────────────────────┐
│Name        │Value                                                           │
├────────────┼────────────────────────────────────────────────────────────────┤
│            │A type name of the form LISTofFOO means a counted list of       │
│            │elements of type FOO. The size of the length field may vary (it │
│LISTofFOO   │is not necessarily the same size as a FOO), and in some cases,  │
│            │it may be implicit. It is fully specified in Appendix B. Except │
│            │where explicitly noted, zero-length lists are legal.            │
├────────────┼────────────────────────────────────────────────────────────────┤
│            │The types BITMASK and LISTofVALUE are somewhat special. Various │
│            │requests contain arguments of the form:                         │
│            │                                                                │
│            │value-mask: BITMASK                                             │
│            │                                                                │
│            │value-list: LISTofVALUE                                         │
│            │                                                                │
│            │These are used to allow the client to specify a subset of a     │
│BITMASK     │heterogeneous collection of optional arguments. The value-mask  │
│            │specifies which arguments are to be provided; each such argument│
│LISTofVALUE │is assigned a unique bit position. The representation of the    │
│            │BITMASK will typically contain more bits than there are defined │
│            │arguments. The unused bits in the value-mask must be zero (or   │
│            │the server generates a Value error). The value-list contains one│
│            │value for each bit set to 1 in the mask, from least significant │
│            │to most significant bit in the mask. Each value is represented  │
│            │with four bytes, but the actual value occupies only the least   │
│            │significant bytes as required. The values of the unused bytes do│
│            │not matter.                                                     │
├────────────┼────────────────────────────────────────────────────────────────┤
│            │A type of the form "T1 or ... or Tn" means the union of the     │
│OR          │indicated types. A single-element type is given as the element  │
│            │without enclosing braces.                                       │
├────────────┼────────────────────────────────────────────────────────────────┤
│WINDOW      │32-bit value (top three bits guaranteed to be zero)             │
├────────────┼────────────────────────────────────────────────────────────────┤
│PIXMAP      │32-bit value (top three bits guaranteed to be zero)             │
├────────────┼────────────────────────────────────────────────────────────────┤
│CURSOR      │32-bit value (top three bits guaranteed to be zero)             │
├────────────┼────────────────────────────────────────────────────────────────┤
│FONT        │32-bit value (top three bits guaranteed to be zero)             │
├────────────┼────────────────────────────────────────────────────────────────┤
│GCONTEXT    │32-bit value (top three bits guaranteed to be zero)             │
├────────────┼────────────────────────────────────────────────────────────────┤
│COLORMAP    │32-bit value (top three bits guaranteed to be zero)             │
├────────────┼────────────────────────────────────────────────────────────────┤
│DRAWABLE    │WINDOW or PIXMAP                                                │
├────────────┼────────────────────────────────────────────────────────────────┤
│FONTABLE    │FONT or GCONTEXT                                                │
├────────────┼────────────────────────────────────────────────────────────────┤
│ATOM        │32-bit value (top three bits guaranteed to be zero)             │
├────────────┼────────────────────────────────────────────────────────────────┤
│VISUALID    │32-bit value (top three bits guaranteed to be zero)             │
├────────────┼────────────────────────────────────────────────────────────────┤
│VALUE       │32-bit quantity (used only in LISTofVALUE)                      │
├────────────┼────────────────────────────────────────────────────────────────┤
│BYTE        │8-bit value                                                     │
├────────────┼────────────────────────────────────────────────────────────────┤
│INT8        │8-bit signed integer                                            │
├────────────┼────────────────────────────────────────────────────────────────┤
│INT16       │16-bit signed integer                                           │
├────────────┼────────────────────────────────────────────────────────────────┤
│INT32       │32-bit signed integer                                           │
├────────────┼────────────────────────────────────────────────────────────────┤
│CARD8       │8-bit unsigned integer                                          │
├────────────┼────────────────────────────────────────────────────────────────┤
│CARD16      │16-bit unsigned integer                                         │
├────────────┼────────────────────────────────────────────────────────────────┤
│CARD32      │32-bit unsigned integer                                         │
├────────────┼────────────────────────────────────────────────────────────────┤
│TIMESTAMP   │CARD32                                                          │
├────────────┼────────────────────────────────────────────────────────────────┤
│BITGRAVITY  │{ Forget, Static, NorthWest, North, NorthEast, West, Center,    │
│            │East, SouthWest, South, SouthEast }                             │
├────────────┼────────────────────────────────────────────────────────────────┤
│WINGRAVITY  │{ Unmap, Static, NorthWest, North, NorthEast, West, Center, East│
│            │, SouthWest, South, SouthEast }                                 │
├────────────┼────────────────────────────────────────────────────────────────┤
│BOOL        │{ True, False }                                                 │
├────────────┼────────────────────────────────────────────────────────────────┤
│            │{ KeyPress, KeyRelease, OwnerGrabButton, ButtonPress,           │
│            │ButtonRelease, EnterWindow, LeaveWindow, PointerMotion,         │
│            │PointerMotionHint, Button1Motion, Button2Motion, Button3Motion, │
│EVENT       │Button4Motion, Button5Motion, ButtonMotion, Exposure,           │
│            │VisibilityChange, StructureNotify, ResizeRedirect,              │
│            │SubstructureNotify, SubstructureRedirect, FocusChange,          │
│            │PropertyChange, ColormapChange, KeymapState }                   │
├────────────┼────────────────────────────────────────────────────────────────┤
│            │{ ButtonPress, ButtonRelease, EnterWindow, LeaveWindow,         │
│POINTEREVENT│PointerMotion, PointerMotionHint, Button1Motion, Button2Motion, │
│            │Button3Motion, Button4Motion, Button5Motion, ButtonMotion,      │
│            │KeymapState }                                                   │
├────────────┼────────────────────────────────────────────────────────────────┤
│            │{ KeyPress, KeyRelease, ButtonPress, ButtonRelease,             │
│DEVICEEVENT │PointerMotion, Button1Motion, Button2Motion, Button3Motion,     │
│            │Button4Motion, Button5Motion, ButtonMotion }                    │
├────────────┼────────────────────────────────────────────────────────────────┤
│KEYSYM      │32-bit value (top three bits guaranteed to be zero)             │
├────────────┼────────────────────────────────────────────────────────────────┤
│KEYCODE     │CARD8                                                           │
├────────────┼────────────────────────────────────────────────────────────────┤
│BUTTON      │CARD8                                                           │
├────────────┼────────────────────────────────────────────────────────────────┤
│KEYMASK     │{ Shift, Lock, Control, Mod1, Mod2, Mod3, Mod4, Mod5 }          │
├────────────┼────────────────────────────────────────────────────────────────┤
│BUTMASK     │{ Button1, Button2, Button3, Button4, Button5 }                 │
├────────────┼────────────────────────────────────────────────────────────────┤
│KEYBUTMASK  │KEYMASK or BUTMASK                                              │
├────────────┼────────────────────────────────────────────────────────────────┤
│STRING8     │LISTofCARD8                                                     │
├────────────┼────────────────────────────────────────────────────────────────┤
│STRING16    │LISTofCHAR2B                                                    │
├────────────┼────────────────────────────────────────────────────────────────┤
│CHAR2B      │[byte1, byte2: CARD8]                                           │
├────────────┼────────────────────────────────────────────────────────────────┤
│POINT       │[x, y: INT16]                                                   │
├────────────┼────────────────────────────────────────────────────────────────┤
│            │[x, y: INT16,                                                   │
│RECTANGLE   │                                                                │
│            │width, height: CARD16]                                          │
├────────────┼────────────────────────────────────────────────────────────────┤
│            │[x, y: INT16,                                                   │
│            │                                                                │
│ARC         │width, height: CARD16,                                          │
│            │                                                                │
│            │angle1, angle2: INT16]                                          │
├────────────┼────────────────────────────────────────────────────────────────┤
│            │[family: { Internet, InternetV6, ServerInterpreted, DECnet,     │
│HOST        │Chaos }                                                         │
│            │                                                                │
│            │address: LISTofBYTE]                                            │
└────────────┴────────────────────────────────────────────────────────────────┘

The [x,y] coordinates of a RECTANGLE specify the upper-left corner.

The primary interpretation of large characters in a STRING16 is that they are
composed of two bytes used to index a two-dimensional matrix, hence, the use of
CHAR2B rather than CARD16. This corresponds to the JIS/ISO method of indexing
2-byte characters. It is expected that most large fonts will be defined with
2-byte matrix indexing. For large fonts constructed with linear indexing, a
CHAR2B can be interpreted as a 16-bit number by treating byte1 as the most
significant byte. This means that clients should always transmit such 16-bit
character values most significant byte first, as the server will never
byte-swap CHAR2B quantities.

The length, format, and interpretation of a HOST address are specific to the
family (see ChangeHosts request).

Chapter 4. Errors

In general, when a request terminates with an error, the request has no side
effects (that is, there is no partial execution). The only requests for which
this is not true are ChangeWindowAttributes, ChangeGC, PolyText8, PolyText16,
FreeColors, StoreColors and ChangeKeyboardControl.

The following error codes result from various requests as follows:

┌──────────────┬──────────────────────────────────────────────────────────────┐
│Error         │Description                                                   │
├──────────────┼──────────────────────────────────────────────────────────────┤
│              │An attempt is made to grab a key/button combination already   │
│              │grabbed by another client. An attempt is made to free a       │
│              │colormap entry not allocated by the client or to free an entry│
│              │in a colormap that was created with all entries writable. An  │
│Access        │attempt is made to store into a read-only or an unallocated   │
│              │colormap entry. An attempt is made to modify the access       │
│              │control list from other than the local host (or otherwise     │
│              │authorized client). An attempt is made to select an event type│
│              │that only one client can select at a time when another client │
│              │has already selected it.                                      │
├──────────────┼──────────────────────────────────────────────────────────────┤
│              │The server failed to allocate the requested resource. Note    │
│              │that the explicit listing of Alloc errors in request only     │
│              │covers allocation errors at a very coarse level and is not    │
│              │intended to cover all cases of a server running out of        │
│Alloc         │allocation space in the middle of service. The semantics when │
│              │a server runs out of allocation space are left unspecified,   │
│              │but a server may generate an Alloc error on any request for   │
│              │this reason, and clients should be prepared to receive such   │
│              │errors and handle or discard them.                            │
├──────────────┼──────────────────────────────────────────────────────────────┤
│Atom          │A value for an ATOM argument does not name a defined ATOM.    │
├──────────────┼──────────────────────────────────────────────────────────────┤
│Colormap      │A value for a COLORMAP argument does not name a defined       │
│              │COLORMAP.                                                     │
├──────────────┼──────────────────────────────────────────────────────────────┤
│Cursor        │A value for a CURSOR argument does not name a defined CURSOR. │
├──────────────┼──────────────────────────────────────────────────────────────┤
│Drawable      │A value for a DRAWABLE argument does not name a defined WINDOW│
│              │or PIXMAP.                                                    │
├──────────────┼──────────────────────────────────────────────────────────────┤
│              │A value for a FONT argument does not name a defined FONT. A   │
│Font          │value for a FONTABLE argument does not name a defined FONT or │
│              │a defined GCONTEXT.                                           │
├──────────────┼──────────────────────────────────────────────────────────────┤
│GContext      │A value for a GCONTEXT argument does not name a defined       │
│              │GCONTEXT.                                                     │
├──────────────┼──────────────────────────────────────────────────────────────┤
│              │The value chosen for a resource identifier either is not      │
│IDChoice      │included in the range assigned to the client or is already in │
│              │use.                                                          │
├──────────────┼──────────────────────────────────────────────────────────────┤
│              │The server does not implement some aspect of the request. A   │
│              │server that generates this error for a core request is        │
│Implementation│deficient. As such, this error is not listed for any of the   │
│              │requests, but clients should be prepared to receive such      │
│              │errors and handle or discard them.                            │
├──────────────┼──────────────────────────────────────────────────────────────┤
│              │The length of a request is shorter or longer than that        │
│Length        │required to minimally contain the arguments. The length of a  │
│              │request exceeds the maximum length accepted by the server.    │
├──────────────┼──────────────────────────────────────────────────────────────┤
│              │An InputOnly window is used as a DRAWABLE. In a graphics      │
│              │request, the GCONTEXT argument does not have the same root and│
│Match         │depth as the destination DRAWABLE argument. Some argument (or │
│              │pair of arguments) has the correct type and range, but it     │
│              │fails to match in some other way required by the request.     │
├──────────────┼──────────────────────────────────────────────────────────────┤
│Name          │A font or color of the specified name does not exist.         │
├──────────────┼──────────────────────────────────────────────────────────────┤
│Pixmap        │A value for a PIXMAP argument does not name a defined PIXMAP. │
├──────────────┼──────────────────────────────────────────────────────────────┤
│Request       │The major or minor opcode does not specify a valid request.   │
├──────────────┼──────────────────────────────────────────────────────────────┤
│              │Some numeric value falls outside the range of values accepted │
│              │by the request. Unless a specific range is specified for an   │
│Value         │argument, the full range defined by the argument's type is    │
│              │accepted. Any argument defined as a set of alternatives       │
│              │typically can generate this error (due to the encoding).      │
├──────────────┼──────────────────────────────────────────────────────────────┤
│Window        │A value for a WINDOW argument does not name a defined WINDOW. │
└──────────────┴──────────────────────────────────────────────────────────────┘

Note

The Atom, Colormap, Cursor, Drawable, Font, GContext, Pixmap and Window errors
are also used when the argument type is extended by union with a set of fixed
alternatives, for example, <WINDOW or PointerRoot or None>.

Chapter 5. Keyboards

A KEYCODE represents a physical (or logical) key. Keycodes lie in the inclusive
range [8,255]. A keycode value carries no intrinsic information, although
server implementors may attempt to encode geometry information (for example,
matrix) to be interpreted in a server-dependent fashion. The mapping between
keys and keycodes cannot be changed using the protocol.

A KEYSYM is an encoding of a symbol on the cap of a key. The set of defined
KEYSYMs include the character sets Latin-1, Latin-2, Latin-3, Latin-4, Kana,
Arabic, Cyrillic, Greek, Tech, Special, Publish, APL, Hebrew, Thai, and Korean
as well as a set of symbols common on keyboards (Return, Help, Tab, and so on).
KEYSYMs with the most significant bit (of the 29 bits) set are reserved as
vendor-specific.

A list of KEYSYMs is associated with each KEYCODE. The list is intended to
convey the set of symbols on the corresponding key. If the list (ignoring
trailing NoSymbol entries) is a single KEYSYM "K", then the list is treated as
if it were the list "K NoSymbol K NoSymbol". If the list (ignoring trailing 
NoSymbol entries) is a pair of KEYSYMs "K1 K2", then the list is treated as if
it were the list "K1 K2 K1 K2". If the list (ignoring trailing NoSymbol
entries) is a triple of KEYSYMs "K1 K2 K3", then the list is treated as if it
were the list " K1 K2 K3 NoSymbol". When an explicit "void" element is desired
in the list, the value VoidSymbol can be used.

The first four elements of the list are split into two groups of KEYSYMs. Group
1 contains the first and second KEYSYMs, Group 2 contains the third and fourth
KEYSYMs. Within each group, if the second element of the group is NoSymbol,
then the group should be treated as if the second element were the same as the
first element, except when the first element is an alphabetic KEYSYM "K" for
which both lowercase and uppercase forms are defined. In that case, the group
should be treated as if the first element were the lowercase form of "K" and
the second element were the uppercase form of "K".

The standard rules for obtaining a KEYSYM from a KeyPress event make use of
only the Group 1 and Group 2 KEYSYMs; no interpretation of other KEYSYMs in the
list is defined. The modifier state determines which group to use. Switching
between groups is controlled by the KEYSYM named MODE SWITCH, by attaching that
KEYSYM to some KEYCODE and attaching that KEYCODE to any one of the modifiers 
Mod1 through Mod5. This modifier is called the "group modifier". For any
KEYCODE, Group 1 is used when the group modifier is off, and Group 2 is used
when the group modifier is on.

The Lock modifier is interpreted as CapsLock when the KEYSYM named CAPS LOCK is
attached to some KEYCODE and that KEYCODE is attached to the Lock modifier. The
Lock modifier is interpreted as ShiftLock when the KEYSYM named SHIFT LOCK is
attached to some KEYCODE and that KEYCODE is attached to the Lock modifier. If
the Lock modifier could be interpreted as both CapsLock and ShiftLock, the
CapsLock interpretation is used.

The operation of "keypad" keys is controlled by the KEYSYM named NUM LOCK, by
attaching that KEYSYM to some KEYCODE and attaching that KEYCODE to any one of
the modifiers Mod1 through Mod5. This modifier is called the "numlock
modifier". The standard KEYSYMs with the prefix KEYPAD in their name are called
"keypad" KEYSYMs; these are KEYSYMS with numeric value in the hexadecimal range
#xFF80 to #xFFBD inclusive. In addition, vendor-specific KEYSYMS in the
hexadecimal range #x11000000 to #x1100FFFF are also keypad KEYSYMs.

Within a group, the choice of KEYSYM is determined by applying the first rule
that is satisfied from the following list:

  • The numlock modifier is on and the second KEYSYM is a keypad KEYSYM. In
    this case, if the Shift modifier is on, or if the Lock modifier is on and
    is interpreted as ShiftLock, then the first KEYSYM is used; otherwise, the
    second KEYSYM is used.

  • The Shift and Lock modifiers are both off. In this case, the first KEYSYM
    is used.

  • The Shift modifier is off, and the Lock modifier is on and is interpreted
    as CapsLock. In this case, the first KEYSYM is used, but if that KEYSYM is
    lowercase alphabetic, then the corresponding uppercase KEYSYM is used
    instead.

  • The Shift modifier is on, and the Lock modifier is on and is interpreted as
    CapsLock. In this case, the second KEYSYM is used, but if that KEYSYM is
    lowercase alphabetic, then the corresponding uppercase KEYSYM is used
    instead.

  • The Shift modifier is on, or the Lock modifier is on and is interpreted as
    ShiftLock, or both. In this case, the second KEYSYM is used.

The mapping between KEYCODEs and KEYSYMs is not used directly by the server; it
is merely stored for reading and writing by clients.

Chapter 6. Pointers

Buttons are always numbered starting with one.

Chapter 7. Predefined Atoms

Predefined atoms are not strictly necessary and may not be useful in all
environments, but they will eliminate many InternAtom requests in most
applications. Note that they are predefined only in the sense of having numeric
values, not in the sense of having required semantics. The core protocol
imposes no semantics on these names, but semantics are specified in other X
Window System standards, such as the Inter-Client Communication Conventions
Manual and the X Logical Font Description Conventions.

The following names have predefined atom values. Note that uppercase and
lowercase matter.

ARC         ITALIC_ANGLE      STRING
ATOM        MAX_SPACE         SUBSCRIPT_X
BITMAP      MIN_SPACE         SUBSCRIPT_Y
CAP_HEIGHT  NORM_SPACE        SUPERSCRIPT_X
CARDINAL    NOTICE            SUPERSCRIPT_Y
COLORMAP    PIXMAP            UNDERLINE_POSITION
COPYRIGHT   POINT             UNDERLINE_THICKNESS
CURSOR      POINT_SIZE        VISUALID
CUT_BUFFER0 PRIMARY           WEIGHT
CUT_BUFFER1 QUAD_WIDTH        WINDOW
CUT_BUFFER2 RECTANGLE         WM_CLASS
CUT_BUFFER3 RESOLUTION        WM_CLIENT_MACHINE
CUT_BUFFER4 RESOURCE_MANAGER  WM_COMMAND
CUT_BUFFER5 RGB_BEST_MAP      WM_HINTS
CUT_BUFFER6 RGB_BLUE_MAP      WM_ICON_NAME
CUT_BUFFER7 RGB_COLOR_MAP     WM_ICON_SIZE
DRAWABLE    RGB_DEFAULT_MAP   WM_NAME
END_SPACE   RGB_GRAY_MAP      WM_NORMAL_HINTS
FAMILY_NAME RGB_GREEN_MAP     WM_SIZE_HINTS
FONT        RGB_RED_MAP       WM_TRANSIENT_FOR
FONT_NAME   SECONDARY         WM_ZOOM_HINTS
FULL_NAME   STRIKEOUT_ASCENT  X_HEIGHT
INTEGER     STRIKEOUT_DESCENT  

To avoid conflicts with possible future names for which semantics might be
imposed (either at the protocol level or in terms of higher level user
interface models), names beginning with an underscore should be used for atoms
that are private to a particular vendor or organization. To guarantee no
conflicts between vendors and organizations, additional prefixes need to be
used. However, the protocol does not define the mechanism for choosing such
prefixes. For names private to a single application or end user but stored in
globally accessible locations, it is suggested that two leading underscores be
used to avoid conflicts with other names.

Chapter 8. Connection Setup

Table of Contents

Connection Initiation
Server Response
Server Information
Screen Information
Visual Information

For remote clients, the X protocol can be built on top of any reliable byte
stream.

Connection Initiation

The client must send an initial byte of data to identify the byte order to be
employed. The value of the byte must be octal 102 or 154. The value 102 (ASCII
uppercase B) means values are transmitted most significant byte first, and
value 154 (ASCII lowercase l) means values are transmitted least significant
byte first. Except where explicitly noted in the protocol, all 16-bit and
32-bit quantities sent by the client must be transmitted with this byte order,
and all 16-bit and 32-bit quantities returned by the server will be transmitted
with this byte order.

Following the byte-order byte, the client sends the following information at
connection setup:

    protocol-major-version: CARD16

    protocol-minor-version: CARD16

    authorization-protocol-name: STRING8

    authorization-protocol-data: STRING8

The version numbers indicate what version of the protocol the client expects
the server to implement.

The authorization name indicates what authorization (and authentication)
protocol the client expects the server to use, and the data is specific to that
protocol. Specification of valid authorization mechanisms is not part of the
core X protocol. A server that does not implement the protocol the client
expects or that only implements the host-based mechanism may simply ignore this
information. If both name and data strings are empty, this is to be interpreted
as "no explicit authorization."

Server Response

The client receives the following information at connection setup:

  • success: { Failed, Success, Authenticate}

The client receives the following additional data if the returned success value
is Failed, and the connection is not successfully established:

    protocol-major-version: CARD16

    protocol-minor-version: CARD16

    reason: STRING8

The client receives the following additional data if the returned success value
is Authenticate, and further authentication negotiation is required:

    reason: STRING8

The contents of the reason string are specific to the authorization protocol in
use. The semantics of this authentication negotiation are not constrained,
except that the negotiation must eventually terminate with a reply from the
server containing a success value of Failed or Success.

The client receives the following additional data if the returned success value
is Success, and the connection is successfully established:

    protocol-major-version: CARD16

    protocol-minor-version: CARD16

    vendor: STRING8

    release-number: CARD32

    resource-id-base, resource-id-mask: CARD32

    image-byte-order: { LSBFirst, MSBFirst }

    bitmap-scanline-unit: {8, 16, 32}

    bitmap-scanline-pad: {8, 16, 32}

    bitmap-bit-order: { LeastSignificant, MostSignificant }

    pixmap-formats: LISTofFORMAT

    roots: LISTofSCREEN

    motion-buffer-size: CARD32

    maximum-request-length: CARD16

    min-keycode, max-keycode: KEYCODE

    where:

        FORMAT:     [depth: CARD8,
                    bits-per-pixel: {1, 4, 8, 16, 24, 32}
                    scanline-pad: {8, 16, 32}]
        SCREEN:     [root: WINDOW
                    width-in-pixels, height-in-pixels: CARD16
                    width-in-millimeters, height-in-millimeters: CARD16
                    allowed-depths: LISTofDEPTH
                    root-depth: CARD8
                    root-visual: VISUALID
                    default-colormap: COLORMAP
                    white-pixel, black-pixel: CARD32
                    min-installed-maps, max-installed-maps: CARD16
                    backing-stores: {Never, WhenMapped, Always}
                    save-unders: BOOL
                    current-input-masks: SETofEVENT]
        DEPTH:      [depth: CARD8
                    visuals: LISTofVISUALTYPE]
        VISUALTYPE: [visual-id: VISUALID
                    class: {StaticGray, StaticColor, TrueColor, GrayScale,
                    PseudoColor, DirectColor}
                    red-mask, green-mask, blue-mask: CARD32
                    bits-per-rgb-value: CARD8
                    colormap-entries: CARD16]

Server Information

The information that is global to the server is:

The protocol version numbers are an escape hatch in case future revisions of
the protocol are necessary. In general, the major version would increment for
incompatible changes, and the minor version would increment for small upward
compatible changes. Barring changes, the major version will be 11, and the
minor version will be 0. The protocol version numbers returned indicate the
protocol the server actually supports. This might not equal the version sent by
the client. The server can (but need not) refuse connections from clients that
offer a different version than the server supports. A server can (but need not)
support more than one version simultaneously.

The vendor string gives some identification of the owner of the server
implementation. The vendor controls the semantics of the release number.

The resource-id-mask contains a single contiguous set of bits (at least 18).
The client allocates resource IDs for types WINDOW, PIXMAP, CURSOR, FONT,
GCONTEXT, and COLORMAP by choosing a value with only some subset of these bits
set and ORing it with resource-id-base. Only values constructed in this way can
be used to name newly created resources over this connection. Resource IDs
never have the top three bits set. The client is not restricted to linear or
contiguous allocation of resource IDs. Once an ID has been freed, it can be
reused. An ID must be unique with respect to the IDs of all other resources,
not just other resources of the same type. However, note that the value spaces
of resource identifiers, atoms, visualids, and keysyms are distinguished by
context, and as such, are not required to be disjoint; for example, a given
numeric value might be both a valid window ID, a valid atom, and a valid
keysym.

Although the server is in general responsible for byte-swapping data to match
the client, images are always transmitted and received in formats (including
byte order) specified by the server. The byte order for images is given by
image-byte-order and applies to each scanline unit in XY format (bitmap format)
and to each pixel value in Z format.

A bitmap is represented in  scanline order. Each  scanline is padded to a
multiple of bits as given by bitmap-scanline-pad. The pad bits are of arbitrary
value. The scanline is quantized in multiples of bits as given by
bitmap-scanline-unit. The bitmap-scanline-unit is always less than or equal to
the bitmap-scanline-pad. Within each unit, the leftmost bit in the bitmap is
either the least significant or most significant bit in the unit, as given by
bitmap-bit-order. If a pixmap is represented in XY format, each plane is
represented as a bitmap, and the planes appear from most significant to least
significant in bit order with no padding between planes.

Pixmap-formats contains one entry for each  depth value. The entry describes
the  Z format used to represent images of that depth. An entry for a depth is
included if any screen supports that depth, and all screens supporting that
depth must support only that Z format for that depth. In Z format, the pixels
are in scanline order, left to right within a scanline. The number of bits used
to hold each pixel is given by bits-per-pixel. Bits-per-pixel may be larger
than strictly required by the depth, in which case the least significant bits
are used to hold the pixmap data, and the values of the unused high-order bits
are undefined. When the bits-per-pixel is 4, the order of nibbles in the byte
is the same as the image byte-order. When the bits-per-pixel is 1, the format
is identical for bitmap format. Each scanline is padded to a multiple of bits
as given by scanline-pad. When bits-per-pixel is 1, this will be identical to
bitmap-scanline-pad.

How a pointing device roams the screens is up to the server implementation and
is transparent to the protocol. No geometry is defined among screens.

The server may retain the recent history of pointer motion and do so to a finer
granularity than is reported by MotionNotify events. The GetMotionEvents
request makes such history available. The motion-buffer-size gives the
approximate maximum number of elements in the history buffer.

Maximum-request-length specifies the maximum length of a request accepted by
the server, in 4-byte units. That is, length is the maximum value that can
appear in the length field of a request. Requests larger than this maximum
generate a Length error, and the server will read and simply discard the entire
request. Maximum-request-length will always be at least 4096 (that is, requests
of length up to and including 16384 bytes will be accepted by all servers).

Min-keycode and max-keycode specify the smallest and largest keycode values
transmitted by the server. Min-keycode is never less than 8, and max-keycode is
never greater than 255. Not all keycodes in this range are required to have
corresponding keys.

Screen Information

The information that applies per screen is:

The allowed-depths specifies what pixmap and window depths are supported.
Pixmaps are supported for each depth listed, and windows of that depth are
supported if at least one visual type is listed for the depth. A pixmap depth
of one is always supported and listed, but windows of depth one might not be
supported. A depth of zero is never listed, but zero-depth InputOnly windows
are always supported.

Root-depth and root-visual specify the depth and visual type of the root
window. Width-in-pixels and height-in-pixels specify the size of the root
window (which cannot be changed). The class of the root window is always 
InputOutput. Width-in-millimeters and height-in-millimeters can be used to
determine the physical size and the aspect ratio.

The default-colormap is the one initially associated with the root window.
Clients with minimal color requirements creating windows of the same depth as
the root may want to allocate from this map by default.

Black-pixel and white-pixel can be used in implementing a monochrome
application. These pixel values are for permanently allocated entries in the
default-colormap. The actual RGB values may be settable on some screens and, in
any case, may not actually be black and white. The names are intended to convey
the expected relative intensity of the colors.

The border of the root window is initially a pixmap filled with the
black-pixel. The initial background of the root window is a pixmap filled with
some unspecified two-color pattern using black-pixel and white-pixel.

Min-installed-maps specifies the number of maps that can be guaranteed to be
installed simultaneously (with InstallColormap), regardless of the number of
entries allocated in each map. Max-installed-maps specifies the maximum number
of maps that might possibly be installed simultaneously, depending on their
allocations. Multiple static-visual colormaps with identical contents but
differing in resource ID should be considered as a single map for the purposes
of this number. For the typical case of a single hardware colormap, both values
will be 1.

Backing-stores indicates when the server supports backing stores for this
screen, although it may be storage limited in the number of windows it can
support at once. If save-unders is True, the server can support the save-under
mode in CreateWindow and ChangeWindowAttributes, although again it may be
storage limited.

The current-input-events is what GetWindowAttributes would return for the
all-event-masks for the root window.

Visual Information

The information that applies per visual-type is:

A given visual type might be listed for more than one depth or for more than
one screen.

For PseudoColor, a pixel value indexes a colormap to produce independent RGB
values; the RGB values can be changed dynamically. GrayScale is treated in the
same way as PseudoColor except which primary drives the screen is undefined;
thus, the client should always store the same value for red, green, and blue in
colormaps. For DirectColor, a pixel value is decomposed into separate RGB
subfields, and each subfield separately indexes the colormap for the
corresponding value. The RGB values can be changed dynamically. TrueColor is
treated in the same way as DirectColor except the colormap has predefined
read-only RGB values. These values are server-dependent but provide linear or
near-linear increasing ramps in each primary. StaticColor is treated in the
same way as PseudoColor except the colormap has predefined read-only RGB
values, which are server-dependent. StaticGray is treated in the same way as 
StaticColor except the red, green, and blue values are equal for any single
pixel value, resulting in shades of gray. StaticGray with a two-entry colormap
can be thought of as monochrome.

The red-mask, green-mask, and blue-mask are only defined for DirectColor and 
TrueColor. Each has one contiguous set of bits set to 1 with no intersections.
Usually each mask has the same number of bits set to 1.

The bits-per-rgb-value specifies the log base 2 of the number of distinct color
intensity values (individually) of red, green, and blue. This number need not
bear any relation to the number of colormap entries. Actual RGB values are
always passed in the protocol within a 16-bit spectrum, with 0 being minimum
intensity and 65535 being the maximum intensity. On hardware that provides a
linear zero-based intensity ramp, the following relationship exists:

       hw-intensity = protocol-intensity / (65536 / total-hw-intensities)

Colormap entries are indexed from 0. The colormap-entries defines the number of
available colormap entries in a newly created colormap. For DirectColor and 
TrueColor, this will usually be 2 to the power of the maximum number of bits
set to 1 in red-mask, green-mask, and blue-mask.

Chapter 9. Requests

Table of Contents

CreateWindow
ChangeWindowAttributes
GetWindowAttributes
DestroyWindow
DestroySubwindows
ChangeSaveSet
ReparentWindow
MapWindow
MapSubwindows
UnmapWindow
UnmapSubwindows
ConfigureWindow
CirculateWindow
GetGeometry
QueryTree
InternAtom
GetAtomName
ChangeProperty
DeleteProperty
GetProperty
RotateProperties
ListProperties
SetSelectionOwner
GetSelectionOwner
ConvertSelection
SendEvent
GrabPointer
UngrabPointer
GrabButton
UngrabButton
ChangeActivePointerGrab
GrabKeyboard
UngrabKeyboard
GrabKey
UngrabKey
AllowEvents
GrabServer
UngrabServer
QueryPointer
GetMotionEvents
TranslateCoordinates
WarpPointer
SetInputFocus
GetInputFocus
QueryKeymap
OpenFont
CloseFont
QueryFont
QueryTextExtents
ListFonts
ListFontsWithInfo
SetFontPath
GetFontPath
CreatePixmap
FreePixmap
CreateGC
ChangeGC
CopyGC
SetDashes
SetClipRectangles
FreeGC
ClearArea
CopyArea
CopyPlane
PolyPoint
PolyLine
PolySegment
PolyRectangle
PolyArc
FillPoly
PolyFillRectangle
PolyFillArc
PutImage
GetImage
PolyText8
PolyText16
ImageText8
ImageText16
CreateColormap
FreeColormap
CopyColormapAndFree
InstallColormap
UninstallColormap
ListInstalledColormaps
AllocColor
AllocNamedColor
AllocColorCells
AllocColorPlanes
FreeColors
StoreColors
StoreNamedColor
QueryColors
LookupColor
CreateCursor
CreateGlyphCursor
FreeCursor
RecolorCursor
QueryBestSize
QueryExtension
ListExtensions
SetModifierMapping
GetModifierMapping
ChangeKeyboardMapping
GetKeyboardMapping
ChangeKeyboardControl
GetKeyboardControl
Bell
SetPointerMapping
GetPointerMapping
ChangePointerControl
GetPointerControl
SetScreenSaver
GetScreenSaver
ForceScreenSaver
ChangeHosts
ListHosts
SetAccessControl
SetCloseDownMode
KillClient
NoOperation

CreateWindow

wid, parent: WINDOW
class: { InputOutput, InputOnly, CopyFromParent}
depth: CARD8
visual: VISUALID or CopyFromParent
x, y: INT16
width, height, border-width: CARD16
value-mask: BITMASK
value-list: LISTofVALUE
Errors: Alloc, Colormap, Cursor, IDChoice, Match, Pixmap, Value, Window

This request creates an unmapped window and assigns the identifier wid to it.

A class of CopyFromParent means the class is taken from the parent. A depth of
zero for class InputOutput or CopyFromParent means the depth is taken from the
parent. A visual of CopyFromParent means the visual type is taken from the
parent. For class InputOutput, the visual type and depth must be a combination
supported for the screen (or a Match error results). The depth need not be the
same as the parent, but the parent must not be of class InputOnly (or a Match
error results). For class InputOnly, the depth must be zero (or a Match error
results), and the visual must be one supported for the screen (or a Match error
results). However, the parent can have any depth and class.

The server essentially acts as if InputOnly windows do not exist for the
purposes of graphics requests, exposure processing, and VisibilityNotify
events. An InputOnly window cannot be used as a drawable (as a source or
destination for graphics requests). InputOnly and InputOutput windows act
identically in other respects-properties, grabs, input control, and so on.

The coordinate system has the X axis horizontal and the Y axis vertical with
the origin [0, 0] at the upper-left corner. Coordinates are integral, in terms
of pixels, and coincide with pixel centers. Each window and pixmap has its own
coordinate system. For a window, the origin is inside the border at the inside,
upper-left corner.

The x and y coordinates for the window are relative to the parent's origin and
specify the position of the upper-left outer corner of the window (not the
origin). The width and height specify the inside size (not including the
border) and must be nonzero (or a Value error results). The border-width for an
InputOnly window must be zero (or a Match error results).

The window is placed on top in the stacking order with respect to siblings.

The value-mask and value-list specify attributes of the window that are to be
explicitly initialized. The possible values are:

┌─────────────────────┬─────────────────────────────────┐
│Attribute            │Type                             │
├─────────────────────┼─────────────────────────────────┤
│background-pixmap    │PIXMAP or None or ParentRelative │
├─────────────────────┼─────────────────────────────────┤
│background-pixel     │CARD32                           │
├─────────────────────┼─────────────────────────────────┤
│border-pixmap        │PIXMAP or CopyFromParent         │
├─────────────────────┼─────────────────────────────────┤
│border-pixel         │CARD32                           │
├─────────────────────┼─────────────────────────────────┤
│bit-gravity          │BITGRAVITY                       │
├─────────────────────┼─────────────────────────────────┤
│win-gravity          │WINGRAVITY                       │
├─────────────────────┼─────────────────────────────────┤
│backing-store        │{ NotUseful, WhenMapped, Always }│
├─────────────────────┼─────────────────────────────────┤
│backing-planes       │CARD32                           │
├─────────────────────┼─────────────────────────────────┤
│backing-pixel        │CARD32                           │
├─────────────────────┼─────────────────────────────────┤
│save-under           │BOOL                             │
├─────────────────────┼─────────────────────────────────┤
│event-mask           │SETofEVENT                       │
├─────────────────────┼─────────────────────────────────┤
│do-not-propagate-mask│SETofDEVICEEVENT                 │
├─────────────────────┼─────────────────────────────────┤
│override-redirect    │BOOL                             │
├─────────────────────┼─────────────────────────────────┤
│colormap             │COLORMAP or CopyFromParent       │
├─────────────────────┼─────────────────────────────────┤
│cursor               │CURSOR or None                   │
└─────────────────────┴─────────────────────────────────┘

The default values when attributes are not explicitly initialized are:

┌─────────────────────┬──────────────┐
│Attribute            │Default       │
├─────────────────────┼──────────────┤
│background-pixmap    │None          │
├─────────────────────┼──────────────┤
│border-pixmap        │CopyFromParent│
├─────────────────────┼──────────────┤
│bit-gravity          │Forget        │
├─────────────────────┼──────────────┤
│win-gravity          │NorthWest     │
├─────────────────────┼──────────────┤
│backing-store        │NotUseful     │
├─────────────────────┼──────────────┤
│backing-planes       │all ones      │
├─────────────────────┼──────────────┤
│backing-pixel        │zero          │
├─────────────────────┼──────────────┤
│save-under           │False         │
├─────────────────────┼──────────────┤
│event-mask           │{} (empty set)│
├─────────────────────┼──────────────┤
│do-not-propagate-mask│{} (empty set)│
├─────────────────────┼──────────────┤
│override-redirect    │False         │
├─────────────────────┼──────────────┤
│colormap             │CopyFromParent│
├─────────────────────┼──────────────┤
│cursor               │None          │
└─────────────────────┴──────────────┘

Only the following attributes are defined for InputOnly windows:

  • win-gravity

  • event-mask

  • do-not-propagate-mask

  • override-redirect

  • cursor

It is a Match error to specify any other attributes for InputOnly windows.

If background-pixmap is given, it overrides the default background-pixmap. The
background pixmap and the window must have the same root and the same depth (or
a Match error results). Any size pixmap can be used, although some sizes may be
faster than others. If background None is specified, the window has no defined
background. If background ParentRelative is specified, the parent's background
is used, but the window must have the same depth as the parent (or a Match
error results). If the parent has background None, then the window will also
have background None. A copy of the parent's background is not made. The
parent's background is reexamined each time the window background is required.
If background-pixel is given, it overrides the default background-pixmap and
any background-pixmap given explicitly, and a pixmap of undefined size filled
with background-pixel is used for the background. Range checking is not
performed on the background-pixel value; it is simply truncated to the
appropriate number of bits. For a ParentRelative background, the background
tile origin always aligns with the parent's background tile origin. Otherwise,
the background tile origin is always the window origin.

When no valid contents are available for regions of a window and the regions
are either visible or the server is maintaining backing store, the server
automatically tiles the regions with the window's background unless the window
has a background of None. If the background is None, the previous screen
contents from other windows of the same depth as the window are simply left in
place if the contents come from the parent of the window or an inferior of the
parent; otherwise, the initial contents of the exposed regions are undefined.
Exposure events are then generated for the regions, even if the background is 
None.

The border tile origin is always the same as the background tile origin. If
border-pixmap is given, it overrides the default border-pixmap. The border
pixmap and the window must have the same root and the same depth (or a Match
error results). Any size pixmap can be used, although some sizes may be faster
than others. If CopyFromParent is given, the parent's border pixmap is copied
(subsequent changes to the parent's border attribute do not affect the child),
but the window must have the same depth as the parent (or a Match error
results). The pixmap might be copied by sharing the same pixmap object between
the child and parent or by making a complete copy of the pixmap contents. If
border-pixel is given, it overrides the default border-pixmap and any
border-pixmap given explicitly, and a pixmap of undefined size filled with
border-pixel is used for the border. Range checking is not performed on the
border-pixel value; it is simply truncated to the appropriate number of bits.

Output to a window is always clipped to the inside of the window, so that the
border is never affected.

The bit-gravity defines which region of the window should be retained if the
window is resized, and win-gravity defines how the window should be
repositioned if the parent is resized (see ConfigureWindow request).

A backing-store of WhenMapped advises the server that maintaining contents of
obscured regions when the window is mapped would be beneficial. A backing-store
of Always advises the server that maintaining contents even when the window is
unmapped would be beneficial. In this case, the server may generate an exposure
event when the window is created. A value of NotUseful advises the server that
maintaining contents is unnecessary, although a server may still choose to
maintain contents while the window is mapped. Note that if the server maintains
contents, then the server should maintain complete contents not just the region
within the parent boundaries, even if the window is larger than its parent.
While the server maintains contents, exposure events will not normally be
generated, but the server may stop maintaining contents at any time.

If save-under is True, the server is advised that when this window is mapped,
saving the contents of windows it obscures would be beneficial.

When the contents of obscured regions of a window are being maintained, regions
obscured by noninferior windows are included in the destination (and source,
when the window is the source) of graphics requests, but regions obscured by
inferior windows are not included.

The backing-planes indicates (with bits set to 1) which bit planes of the
window hold dynamic data that must be preserved in backing-stores and during
save-unders. The backing-pixel specifies what value to use in planes not
covered by backing-planes. The server is free to save only the specified bit
planes in the backing-store or save-under and regenerate the remaining planes
with the specified pixel value. Any bits beyond the specified depth of the
window in these values are simply ignored.

The event-mask defines which events the client is interested in for this window
(or for some event types, inferiors of the window). The do-not-propagate-mask
defines which events should not be propagated to ancestor windows when no
client has the event type selected in this window.

The override-redirect specifies whether map and configure requests on this
window should override a SubstructureRedirect on the parent, typically to
inform a window manager not to tamper with the window.

The colormap specifies the colormap that best reflects the true colors of the
window. Servers capable of supporting multiple hardware colormaps may use this
information, and window managers may use it for InstallColormap requests. The
colormap must have the same visual type and root as the window (or a Match
error results). If CopyFromParent is specified, the parent's colormap is copied
(subsequent changes to the parent's colormap attribute do not affect the
child). However, the window must have the same visual type as the parent (or a 
Match error results), and the parent must not have a colormap of None (or a 
Match error results). For an explanation of None, see FreeColormap request. The
colormap is copied by sharing the colormap object between the child and the
parent, not by making a complete copy of the colormap contents.

If a cursor is specified, it will be used whenever the pointer is in the
window. If None is specified, the parent's cursor will be used when the pointer
is in the window, and any change in the parent's cursor will cause an immediate
change in the displayed cursor.

This request generates a CreateNotify event.

The background and border pixmaps and the cursor may be freed immediately if no
further explicit references to them are to be made.

Subsequent drawing into the background or border pixmap has an undefined effect
on the window state. The server might or might not make a copy of the pixmap.

ChangeWindowAttributes

window: WINDOW
value-mask: BITMASK
value-list: LISTofVALUE
Errors: Access, Colormap, Cursor, Match, Pixmap, Value, Window

The value-mask and value-list specify which attributes are to be changed. The
values and restrictions are the same as for CreateWindow.

Setting a new background, whether by background-pixmap or background-pixel,
overrides any previous background. Setting a new border, whether by
border-pixel or border-pixmap, overrides any previous border.

Changing the background does not cause the window contents to be changed.
Setting the border or changing the background such that the border tile origin
changes causes the border to be repainted. Changing the background of a root
window to None or ParentRelative restores the default background pixmap.
Changing the border of a root window to CopyFromParent restores the default
border pixmap.

Changing the win-gravity does not affect the current position of the window.

Changing the backing-store of an obscured window to WhenMapped or Always or
changing the backing-planes, backing-pixel, or save-under of a mapped window
may have no immediate effect.

Multiple clients can select input on the same window; their event-masks are
disjoint. When an event is generated, it will be reported to all interested
clients. However, only one client at a time can select for SubstructureRedirect
, only one client at a time can select for ResizeRedirect, and only one client
at a time can select for ButtonPress. An attempt to violate these restrictions
results in an Access error.

There is only one do-not-propagate-mask for a window, not one per client.

Changing the colormap of a window (by defining a new map, not by changing the
contents of the existing map) generates a ColormapNotify event. Changing the
colormap of a visible window might have no immediate effect on the screen (see
InstallColormap request).

Changing the cursor of a root window to None restores the default cursor.

The order in which attributes are verified and altered is server-dependent. If
an error is generated, a subset of the attributes may have been altered.

GetWindowAttributes

window: WINDOW
▶
visual: VISUALID
class: { InputOutput, InputOnly}
bit-gravity: BITGRAVITY
win-gravity: WINGRAVITY
backing-store: { NotUseful, WhenMapped, Always}
backing-planes: CARD32
backing-pixel: CARD32
save-under: BOOL
colormap: COLORMAP or None
map-is-installed: BOOL
map-state: { Unmapped, Unviewable, Viewable}
all-event-masks, your-event-mask: SETofEVENT
do-not-propagate-mask: SETofDEVICEEVENT
override-redirect: BOOL
Errors: Window

This request returns the current attributes of the window. A window is 
Unviewable if it is mapped but some ancestor is unmapped. All-event-masks is
the inclusive-OR of all event masks selected on the window by clients.
Your-event-mask is the event mask selected by the querying client.

DestroyWindow

window: WINDOW
Errors: Window

If the argument window is mapped, an UnmapWindow request is performed
automatically. The window and all inferiors are then destroyed, and a
DestroyNotify event is generated for each window. The ordering of the 
DestroyNotify events is such that for any given window, DestroyNotify is
generated on all inferiors of the window before being generated on the window
itself. The ordering among siblings and across subhierarchies is not otherwise
constrained.

Normal exposure processing on formerly obscured windows is performed.

If the window is a root window, this request has no effect.

DestroySubwindows

window: WINDOW
Errors: Window

This request performs a DestroyWindow request on all children of the window, in
bottom-to-top stacking order.

ChangeSaveSet

window: WINDOW
mode: { Insert, Delete}
Errors: Match, Value, Window

This request adds or removes the specified window from the client's save-set.
The window must have been created by some other client (or a Match error
results). For further information about the use of the save-set, see section 10
.

When windows are destroyed, the server automatically removes them from the
save-set.

ReparentWindow

window, parent: WINDOW
x, y: INT16
Errors: Match, Window

If the window is mapped, an UnmapWindow request is performed automatically
first. The window is then removed from its current position in the hierarchy
and is inserted as a child of the specified parent. The x and y coordinates are
relative to the parent's origin and specify the new position of the upper-left
outer corner of the window. The window is placed on top in the stacking order
with respect to siblings. A ReparentNotify event is then generated. The
override-redirect attribute of the window is passed on in this event; a value
of True indicates that a window manager should not tamper with this window.
Finally, if the window was originally mapped, a MapWindow request is performed
automatically.

Normal exposure processing on formerly obscured windows is performed. The
server might not generate exposure events for regions from the initial unmap
that are immediately obscured by the final map.

A Match error is generated if: The new parent is not on the same screen as the
old parent. The new parent is the window itself or an inferior of the window.
The new parent is InputOnly, and the window is not. The window has a 
ParentRelative background, and the new parent is not the same depth as the
window.

MapWindow

window: WINDOW
Errors: Window

If the window is already mapped, this request has no effect.

If the override-redirect attribute of the window is False and some other client
has selected SubstructureRedirect on the parent, then a MapRequest event is
generated, but the window remains unmapped. Otherwise, the window is mapped,
and a MapNotify event is generated.

If the window is now viewable and its contents have been discarded, the window
is tiled with its background (if no background is defined, the existing screen
contents are not altered), and zero or more exposure events are generated. If a
backing-store has been maintained while the window was unmapped, no exposure
events are generated. If a backing-store will now be maintained, a full-window
exposure is always generated. Otherwise, only visible regions may be reported.
Similar tiling and exposure take place for any newly viewable inferiors.

MapSubwindows

window: WINDOW
Errors: Window

This request performs a MapWindow request on all unmapped children of the
window, in top-to-bottom stacking order.

UnmapWindow

window: WINDOW
Errors: Window

If the window is already unmapped, this request has no effect. Otherwise, the
window is unmapped, and an UnmapNotify event is generated. Normal exposure
processing on formerly obscured windows is performed.

UnmapSubwindows

window: WINDOW
Errors: Window

This request performs an UnmapWindow request on all mapped children of the
window, in bottom-to-top stacking order.

ConfigureWindow

window: WINDOW
value-mask: BITMASK
value-list: LISTofVALUE
Errors: Match, Value, Window

This request changes the configuration of the window. The value-mask and
value-list specify which values are to be given. The possible values are:

┌────────────┬───────────────────────────────────────────┐
│Attribute   │Type                                       │
├────────────┼───────────────────────────────────────────┤
│x           │INT16                                      │
├────────────┼───────────────────────────────────────────┤
│y           │INT16                                      │
├────────────┼───────────────────────────────────────────┤
│width       │CARD16                                     │
├────────────┼───────────────────────────────────────────┤
│height      │CARD16                                     │
├────────────┼───────────────────────────────────────────┤
│border-width│CARD16                                     │
├────────────┼───────────────────────────────────────────┤
│sibling     │WINDOW                                     │
├────────────┼───────────────────────────────────────────┤
│stack-mode  │{ Above, Below, TopIf, BottomIf, Opposite }│
└────────────┴───────────────────────────────────────────┘

The x and y coordinates are relative to the parent's origin and specify the
position of the upper-left outer corner of the window. The width and height
specify the inside size, not including the border, and must be nonzero (or a 
Value error results). Those values not specified are taken from the existing
geometry of the window. Note that changing just the border-width leaves the
outer-left corner of the window in a fixed position but moves the absolute
position of the window's origin. It is a Match error to attempt to make the
border-width of an InputOnly window nonzero.

If the override-redirect attribute of the window is False and some other client
has selected SubstructureRedirect on the parent, a ConfigureRequest event is
generated, and no further processing is performed. Otherwise, the following is
performed:

If some other client has selected ResizeRedirect on the window and the inside
width or height of the window is being changed, a ResizeRequest event is
generated, and the current inside width and height are used instead. Note that
the override-redirect attribute of the window has no effect on ResizeRedirect
and that SubstructureRedirect on the parent has precedence over ResizeRedirect
on the window.

The geometry of the window is changed as specified, the window is restacked
among siblings, and a ConfigureNotify event is generated if the state of the
window actually changes. If the inside width or height of the window has
actually changed, then children of the window are affected, according to their
win-gravity. Exposure processing is performed on formerly obscured windows
(including the window itself and its inferiors if regions of them were obscured
but now are not). Exposure processing is also performed on any new regions of
the window (as a result of increasing the width or height) and on any regions
where window contents are lost.

If the inside width or height of a window is not changed but the window is
moved or its border is changed, then the contents of the window are not lost
but move with the window. Changing the inside width or height of the window
causes its contents to be moved or lost, depending on the bit-gravity of the
window. It also causes children to be reconfigured, depending on their
win-gravity. For a change of width and height of W and H, we define the [x, y]
pairs as:

┌─────────┬───────────┐
│Direction│Deltas     │
├─────────┼───────────┤
│NorthWest│[0, 0]     │
├─────────┼───────────┤
│North    │[W/2, 0]   │
├─────────┼───────────┤
│NorthEast│[W, 0]     │
├─────────┼───────────┤
│West     │[0, H/2]   │
├─────────┼───────────┤
│Center   │[W/2, H/2] │
├─────────┼───────────┤
│East     │[W, H/2]   │
├─────────┼───────────┤
│SouthWest│[0, H]     │
├─────────┼───────────┤
│South    │[W/2, H]   │
├─────────┼───────────┤
│SouthEast│[W, H]     │
└─────────┴───────────┘

When a window with one of these bit-gravities is resized, the corresponding
pair defines the change in position of each pixel in the window. When a window
with one of these win-gravities has its parent window resized, the
corresponding pair defines the change in position of the window within the
parent. This repositioning generates a GravityNotify event. GravityNotify
events are generated after the ConfigureNotify event is generated.

A gravity of Static indicates that the contents or origin should not move
relative to the origin of the root window. If the change in size of the window
is coupled with a change in position of [X, Y], then for bit-gravity the change
in position of each pixel is [-X, -Y] and for win-gravity the change in
position of a child when its parent is so resized is [-X, -Y]. Note that Static
gravity still only takes effect when the width or height of the window is
changed, not when the window is simply moved.

A bit-gravity of Forget indicates that the window contents are always discarded
after a size change, even if backing-store or save-under has been requested.
The window is tiled with its background (except, if no background is defined,
the existing screen contents are not altered) and zero or more exposure events
are generated.

The contents and borders of inferiors are not affected by their parent's
bit-gravity. A server is permitted to ignore the specified bit-gravity and use 
Forget instead.

A win-gravity of Unmap is like NorthWest, but the child is also unmapped when
the parent is resized, and an UnmapNotify event is generated. UnmapNotify
events are generated after the ConfigureNotify event is generated.

If a sibling and a stack-mode are specified, the window is restacked as
follows:

Above    The window is placed just above the sibling.
Below    The window is placed just below the sibling.
TopIf    If the sibling occludes the window, then the window is placed at the
         top of the stack.
BottomIf If the window occludes the sibling, then the window is placed at the
         bottom of the stack.
         If the sibling occludes the window, then the window is placed at the
Opposite top of the stack. Otherwise, if the window occludes the sibling, then
         the window is placed at the bottom of the stack.

If a stack-mode is specified but no sibling is specified, the window is
restacked as follows:

Above    The window is placed at the top of the stack.
Below    The window is placed at the bottom of the stack.
TopIf    If any sibling occludes the window, then the window is placed at the
         top of the stack.
BottomIf If the window occludes any sibling, then the window is placed at the
         bottom of the stack.
         If any sibling occludes the window, then the window is placed at the
Opposite top of the stack. Otherwise, if the window occludes any sibling, then
         the window is placed at the bottom of the stack.

It is a Match error if a sibling is specified without a stack-mode or if the
window is not actually a sibling.

Note that the computations for BottomIf, TopIf, and Opposite are performed with
respect to the window's final geometry (as controlled by the other arguments to
the request), not to its initial geometry.

Attempts to configure a root window have no effect.

CirculateWindow

window: WINDOW
direction: { RaiseLowest, LowerHighest}
Errors: Value, Window

If some other client has selected SubstructureRedirect on the window, then a
CirculateRequest event is generated, and no further processing is performed.
Otherwise, the following is performed, and then a CirculateNotify event is
generated if the window is actually restacked.

For RaiseLowest, CirculateWindow raises the lowest mapped child (if any) that
is occluded by another child to the top of the stack. For LowerHighest, 
CirculateWindow lowers the highest mapped child (if any) that occludes another
child to the bottom of the stack. Exposure processing is performed on formerly
obscured windows.

GetGeometry

drawable: DRAWABLE
▶
root: WINDOW
depth: CARD8
x, y: INT16
width, height, border-width: CARD16
Errors: Drawable

This request returns the root and current geometry of the drawable. The depth
is the number of bits per pixel for the object. The x, y, and border-width will
always be zero for pixmaps. For a window, the x and y coordinates specify the
upper-left outer corner of the window relative to its parent's origin, and the
width and height specify the inside size, not including the border.

It is legal to pass an InputOnly window as a drawable to this request.

QueryTree

window: WINDOW
▶
root: WINDOW
parent: WINDOW or None
children: LISTofWINDOW
Errors: Window

This request returns the root, the parent, and the children of the window. The
children are listed in bottom-to-top stacking order.

InternAtom

name: STRING8
only-if-exists: BOOL
▶
atom: ATOM or None
Errors: Alloc, Value

This request returns the atom for the given name. If only-if-exists is False,
then the atom is created if it does not exist. The string should use the ISO
Latin-1 encoding. Uppercase and lowercase matter.

The lifetime of an atom is not tied to the interning client. Atoms remain
defined until server reset (see section 10).

GetAtomName

atom: ATOM
▶
name: STRING8
Errors: Atom

This request returns the name for the given atom.

ChangeProperty

window: WINDOW
property, type: ATOM
format: {8, 16, 32}
mode: { Replace, Prepend, Append}
data: LISTofINT8 or LISTofINT16 or LISTofINT32
Errors: Alloc, Atom, Match, Value, Window

This request alters the property for the specified window. The type is
uninterpreted by the server. The format specifies whether the data should be
viewed as a list of 8-bit, 16-bit, or 32-bit quantities so that the server can
correctly byte-swap as necessary.

If the mode is Replace, the previous property value is discarded. If the mode
is Prepend or Append, then the type and format must match the existing property
value (or a Match error results). If the property is undefined, it is treated
as defined with the correct type and format with zero-length data. For Prepend,
the data is tacked on to the beginning of the existing data, and for Append, it
is tacked on to the end of the existing data.

This request generates a PropertyNotify event on the window.

The lifetime of a property is not tied to the storing client. Properties remain
until explicitly deleted, until the window is destroyed, or until server reset
(see section 10).

The maximum size of a property is server-dependent and may vary dynamically.

DeleteProperty

window: WINDOW
property: ATOM
Errors: Atom, Window

This request deletes the property from the specified window if the property
exists and generates a PropertyNotify event on the window unless the property
does not exist.

GetProperty

window: WINDOW
property: ATOM
type: ATOM or AnyPropertyType
long-offset, long-length: CARD32
delete: BOOL
▶
type: ATOM or None
format: {0, 8, 16, 32}
bytes-after: CARD32
value: LISTofINT8 or LISTofINT16 or LISTofINT32
Errors: Atom, Value, Window

If the specified property does not exist for the specified window, then the
return type is None, the format and bytes-after are zero, and the value is
empty. The delete argument is ignored in this case. If the specified property
exists but its type does not match the specified type, then the return type is
the actual type of the property, the format is the actual format of the
property (never zero), the bytes-after is the length of the property in bytes
(even if the format is 16 or 32), and the value is empty. The delete argument
is ignored in this case. If the specified property exists and either 
AnyPropertyType is specified or the specified type matches the actual type of
the property, then the return type is the actual type of the property, the
format is the actual format of the property (never zero), and the bytes-after
and value are as follows, given:

        N = actual length of the stored property in bytes
            (even if the format is 16 or 32)
        I = 4 * long-offset
        T = N - I
        L = MINIMUM(T, 4 * long-length)
        A = N - (I + L)

The returned value starts at byte index I in the property (indexing from 0),
and its length in bytes is L. However, it is a Value error if long-offset is
given such that L is negative. The value of bytes-after is A, giving the number
of trailing unread bytes in the stored property. If delete is True and the
bytes-after is zero, the property is also deleted from the window, and a
PropertyNotify event is generated on the window.

RotateProperties

window: WINDOW
delta: INT16
properties: LISTofATOM
Errors: Atom, Match, Window

If the property names in the list are viewed as being numbered starting from
zero, and there are N property names in the list, then the value associated
with property name I becomes the value associated with property name (I +
delta) mod N, for all I from zero to N - 1. The effect is to rotate the states
by delta places around the virtual ring of property names (right for positive
delta, left for negative delta).

If delta mod N is nonzero, a PropertyNotify event is generated for each
property in the order listed.

If an atom occurs more than once in the list or no property with that name is
defined for the window, a Match error is generated. If an Atom or Match error
is generated, no properties are changed.

ListProperties

window: WINDOW
▶
atoms: LISTofATOM
Errors: Window

This request returns the atoms of properties currently defined on the window.

SetSelectionOwner

selection: ATOM
owner: WINDOW or None
time: TIMESTAMP or CurrentTime
Errors: Atom, Window

This request changes the owner, owner window, and last-change time of the
specified selection. This request has no effect if the specified time is
earlier than the current last-change time of the specified selection or is
later than the current server time. Otherwise, the last-change time is set to
the specified time with CurrentTime replaced by the current server time. If the
owner window is specified as None, then the owner of the selection becomes None
(that is, no owner). Otherwise, the owner of the selection becomes the client
executing the request. If the new owner (whether a client or None) is not the
same as the current owner and the current owner is not None, then the current
owner is sent a SelectionClear event.

If the client that is the owner of a selection is later terminated (that is,
its connection is closed) or if the owner window it has specified in the
request is later destroyed, then the owner of the selection automatically
reverts to None, but the last-change time is not affected.

The selection atom is uninterpreted by the server. The owner window is returned
by the GetSelectionOwner request and is reported in SelectionRequest and
SelectionClear events.

Selections are global to the server.

GetSelectionOwner

selection: ATOM
▶
owner: WINDOW or None
Errors: Atom

This request returns the current owner window of the specified selection, if
any. If None is returned, then there is no owner for the selection.

ConvertSelection

selection, target: ATOM
property: ATOM or None
requestor: WINDOW
time: TIMESTAMP or CurrentTime
Errors: Atom, Window

If the specified selection has an owner, the server sends a SelectionRequest
event to that owner. If no owner for the specified selection exists, the server
generates a SelectionNotify event to the requestor with property None. The
arguments are passed on unchanged in either of the events.

SendEvent

destination: WINDOW or PointerWindow or InputFocus
propagate: BOOL
event-mask: SETofEVENT
event: <normal-event-format>
Errors: Value, Window

If PointerWindow is specified, destination is replaced with the window that the
pointer is in. If InputFocus is specified and the focus window contains the
pointer, destination is replaced with the window that the pointer is in.
Otherwise, destination is replaced with the focus window.

If the event-mask is the empty set, then the event is sent to the client that
created the destination window. If that client no longer exists, no event is
sent.

If propagate is False, then the event is sent to every client selecting on
destination any of the event types in event-mask.

If propagate is True and no clients have selected on destination any of the
event types in event-mask, then destination is replaced with the closest
ancestor of destination for which some client has selected a type in event-mask
and no intervening window has that type in its do-not-propagate-mask. If no
such window exists or if the window is an ancestor of the focus window and 
InputFocus was originally specified as the destination, then the event is not
sent to any clients. Otherwise, the event is reported to every client selecting
on the final destination any of the types specified in event-mask.

The event code must be one of the core events or one of the events defined by
an extension (or a Value error results) so that the server can correctly
byte-swap the contents as necessary. The contents of the event are otherwise
unaltered and unchecked by the server except to force on the most significant
bit of the event code and to set the sequence number in the event correctly.

Active grabs are ignored for this request.

GrabPointer

grab-window: WINDOW
owner-events: BOOL
event-mask: SETofPOINTEREVENT
pointer-mode, keyboard-mode: { Synchronous, Asynchronous}
confine-to: WINDOW or None
cursor: CURSOR or None
time: TIMESTAMP or CurrentTime
▶
status: { Success, AlreadyGrabbed, Frozen, InvalidTime, NotViewable}
Errors: Cursor, Value, Window

This request actively grabs control of the pointer. Further pointer events are
only reported to the grabbing client. The request overrides any active pointer
grab by this client.

If owner-events is False, all generated pointer events are reported with
respect to grab-window and are only reported if selected by event-mask. If
owner-events is True and a generated pointer event would normally be reported
to this client, it is reported normally. Otherwise, the event is reported with
respect to the grab-window and is only reported if selected by event-mask. For
either value of owner-events, unreported events are simply discarded.

If pointer-mode is Asynchronous, pointer event processing continues normally.
If the pointer is currently frozen by this client, then processing of pointer
events is resumed. If pointer-mode is Synchronous, the state of the pointer (as
seen by means of the protocol) appears to freeze, and no further pointer events
are generated by the server until the grabbing client issues a releasing
AllowEvents request or until the pointer grab is released. Actual pointer
changes are not lost while the pointer is frozen. They are simply queued for
later processing.

If keyboard-mode is Asynchronous, keyboard event processing is unaffected by
activation of the grab. If keyboard-mode is Synchronous, the state of the
keyboard (as seen by means of the protocol) appears to freeze, and no further
keyboard events are generated by the server until the grabbing client issues a
releasing AllowEvents request or until the pointer grab is released. Actual
keyboard changes are not lost while the keyboard is frozen. They are simply
queued for later processing.

If a cursor is specified, then it is displayed regardless of what window the
pointer is in. If no cursor is specified, then when the pointer is in
grab-window or one of its subwindows, the normal cursor for that window is
displayed. Otherwise, the cursor for grab-window is displayed.

If a confine-to window is specified, then the pointer will be restricted to
stay contained in that window. The confine-to window need have no relationship
to the grab-window. If the pointer is not initially in the confine-to window,
then it is warped automatically to the closest edge (and enter/leave events are
generated normally) just before the grab activates. If the confine-to window is
subsequently reconfigured, the pointer will be warped automatically as
necessary to keep it contained in the window.

This request generates EnterNotify and LeaveNotify events.

The request fails with status AlreadyGrabbed if the pointer is actively grabbed
by some other client. The request fails with status Frozen if the pointer is
frozen by an active grab of another client. The request fails with status 
NotViewable if grab-window or confine-to window is not viewable or if the
confine-to window lies completely outside the boundaries of the root window.
The request fails with status InvalidTime if the specified time is earlier than
the last-pointer-grab time or later than the current server time. Otherwise,
the last-pointer-grab time is set to the specified time, with CurrentTime
replaced by the current server time.

UngrabPointer

time: TIMESTAMP or CurrentTime

This request releases the pointer if this client has it actively grabbed (from
either GrabPointer or GrabButton or from a normal button press) and releases
any queued events. The request has no effect if the specified time is earlier
than the last-pointer-grab time or is later than the current server time.

This request generates EnterNotify and LeaveNotify events.

An UngrabPointer request is performed automatically if the event window or
confine-to window for an active pointer grab becomes not viewable or if window
reconfiguration causes the confine-to window to lie completely outside the
boundaries of the root window.

GrabButton

modifiers: SETofKEYMASK or AnyModifier
button: BUTTON or AnyButton
grab-window: WINDOW
owner-events: BOOL
event-mask: SETofPOINTEREVENT
pointer-mode, keyboard-mode: { Synchronous, Asynchronous}
confine-to: WINDOW or None
cursor: CURSOR or None
Errors: Access, Cursor, Value, Window

This request establishes a passive grab. In the future, the pointer is actively
grabbed as described in GrabPointer, the last-pointer-grab time is set to the
time at which the button was pressed (as transmitted in the ButtonPress event),
and the ButtonPress event is reported if all of the following conditions are
true: The pointer is not grabbed and the specified button is logically pressed
when the specified modifier keys are logically down, and no other buttons or
modifier keys are logically down. The grab-window contains the pointer. The
confine-to window (if any) is viewable. A passive grab on the same button/key
combination does not exist on any ancestor of grab-window.

The interpretation of the remaining arguments is the same as for GrabPointer.
The active grab is terminated automatically when the logical state of the
pointer has all buttons released, independent of the logical state of modifier
keys. Note that the logical state of a device (as seen by means of the
protocol) may lag the physical state if device event processing is frozen.

This request overrides all previous passive grabs by the same client on the
same button/key combinations on the same window. A modifier of AnyModifier is
equivalent to issuing the request for all possible modifier combinations
(including the combination of no modifiers). It is not required that all
specified modifiers have currently assigned keycodes. A button of AnyButton is
equivalent to issuing the request for all possible buttons. Otherwise, it is
not required that the button specified currently be assigned to a physical
button.

An Access error is generated if some other client has already issued a 
GrabButton request with the same button/key combination on the same window.
When using AnyModifier or AnyButton, the request fails completely (no grabs are
established), and an Access error is generated if there is a conflicting grab
for any combination. The request has no effect on an active grab.

UngrabButton

modifiers: SETofKEYMASK or AnyModifier
button: BUTTON or AnyButton
grab-window: WINDOW
Errors: Value, Window

This request releases the passive button/key combination on the specified
window if it was grabbed by this client. A modifiers argument of AnyModifier is
equivalent to issuing the request for all possible modifier combinations
(including the combination of no modifiers). A button of AnyButton is
equivalent to issuing the request for all possible buttons. The request has no
effect on an active grab.

ChangeActivePointerGrab

event-mask: SETofPOINTEREVENT
cursor: CURSOR or None
time: TIMESTAMP or CurrentTime
Errors: Cursor, Value

This request changes the specified dynamic parameters if the pointer is
actively grabbed by the client and the specified time is no earlier than the
last-pointer-grab time and no later than the current server time. The
interpretation of event-mask and cursor are the same as in GrabPointer. This
request has no effect on the parameters of any passive grabs established with
GrabButton.

GrabKeyboard

grab-window: WINDOW
owner-events: BOOL
pointer-mode, keyboard-mode: { Synchronous, Asynchronous}
time: TIMESTAMP or CurrentTime
▶
status: { Success, AlreadyGrabbed, Frozen, InvalidTime, NotViewable}
Errors: Value, Window

This request actively grabs control of the keyboard. Further key events are
reported only to the grabbing client. This request overrides any active
keyboard grab by this client.

If owner-events is False, all generated key events are reported with respect to
grab-window. If owner-events is True and if a generated key event would
normally be reported to this client, it is reported normally. Otherwise, the
event is reported with respect to the grab-window. Both KeyPress and KeyRelease
events are always reported, independent of any event selection made by the
client.

If keyboard-mode is Asynchronous, keyboard event processing continues normally.
If the keyboard is currently frozen by this client, then processing of keyboard
events is resumed. If keyboard-mode is Synchronous, the state of the keyboard
(as seen by means of the protocol) appears to freeze. No further keyboard
events are generated by the server until the grabbing client issues a releasing
AllowEvents request or until the keyboard grab is released. Actual keyboard
changes are not lost while the keyboard is frozen. They are simply queued for
later processing.

If pointer-mode is Asynchronous, pointer event processing is unaffected by
activation of the grab. If pointer-mode is Synchronous, the state of the
pointer (as seen by means of the protocol) appears to freeze. No further
pointer events are generated by the server until the grabbing client issues a
releasing AllowEvents request or until the keyboard grab is released. Actual
pointer changes are not lost while the pointer is frozen. They are simply
queued for later processing.

This request generates FocusIn and FocusOut events.

The request fails with status AlreadyGrabbed if the keyboard is actively
grabbed by some other client. The request fails with status Frozen if the
keyboard is frozen by an active grab of another client. The request fails with
status NotViewable if grab-window is not viewable. The request fails with
status InvalidTime if the specified time is earlier than the last-keyboard-grab
time or later than the current server time. Otherwise, the last-keyboard-grab
time is set to the specified time with CurrentTime replaced by the current
server time.

UngrabKeyboard

time: TIMESTAMP or CurrentTime

This request releases the keyboard if this client has it actively grabbed (as a
result of either GrabKeyboard or GrabKey) and releases any queued events. The
request has no effect if the specified time is earlier than the
last-keyboard-grab time or is later than the current server time.

This request generates FocusIn and FocusOut events.

An UngrabKeyboard is performed automatically if the event window for an active
keyboard grab becomes not viewable.

GrabKey

key: KEYCODE or AnyKey
modifiers: SETofKEYMASK or AnyModifier
grab-window: WINDOW
owner-events: BOOL
pointer-mode, keyboard-mode: { Synchronous, Asynchronous}
Errors: Access, Value, Window

This request establishes a passive grab on the keyboard. In the future, the
keyboard is actively grabbed as described in GrabKeyboard, the
last-keyboard-grab time is set to the time at which the key was pressed (as
transmitted in the KeyPress event), and the KeyPress event is reported if all
of the following conditions are true: The keyboard is not grabbed and the
specified key (which can itself be a modifier key) is logically pressed when
the specified modifier keys are logically down, and no other modifier keys are
logically down. Either the grab-window is an ancestor of (or is) the focus
window, or the grab-window is a descendent of the focus window and contains the
pointer. A passive grab on the same key combination does not exist on any
ancestor of grab-window.

The interpretation of the remaining arguments is the same as for GrabKeyboard.
The active grab is terminated automatically when the logical state of the
keyboard has the specified key released, independent of the logical state of
modifier keys. Note that the logical state of a device (as seen by means of the
protocol) may lag the physical state if device event processing is frozen.

This request overrides all previous passive grabs by the same client on the
same key combinations on the same window. A modifier of AnyModifier is
equivalent to issuing the request for all possible modifier combinations
(including the combination of no modifiers). It is not required that all
modifiers specified have currently assigned keycodes. A key of AnyKey is
equivalent to issuing the request for all possible keycodes. Otherwise, the key
must be in the range specified by min-keycode and max-keycode in the connection
setup (or a Value error results).

An Access error is generated if some other client has issued a GrabKey with the
same key combination on the same window. When using AnyModifier or AnyKey, the
request fails completely (no grabs are established), and an Access error is
generated if there is a conflicting grab for any combination.

UngrabKey

key: KEYCODE or AnyKey
modifiers: SETofKEYMASK or AnyModifier
grab-window: WINDOW
Errors: Value, Window

This request releases the key combination on the specified window if it was
grabbed by this client. A modifiers argument of AnyModifier is equivalent to
issuing the request for all possible modifier combinations (including the
combination of no modifiers). A key of AnyKey is equivalent to issuing the
request for all possible keycodes. This request has no effect on an active
grab.

AllowEvents

mode: { AsyncPointer, SyncPointer, ReplayPointer, AsyncKeyboard,
SyncKeyboard, ReplayKeyboard, AsyncBoth, SyncBoth}
time: TIMESTAMP or CurrentTime
Errors: Value

This request releases some queued events if the client has caused a device to
freeze. The request has no effect if the specified time is earlier than the
last-grab time of the most recent active grab for the client or if the
specified time is later than the current server time.

For AsyncPointer, if the pointer is frozen by the client, pointer event
processing continues normally. If the pointer is frozen twice by the client on
behalf of two separate grabs, AsyncPointer thaws for both. AsyncPointer has no
effect if the pointer is not frozen by the client, but the pointer need not be
grabbed by the client.

For SyncPointer, if the pointer is frozen and actively grabbed by the client,
pointer event processing continues normally until the next ButtonPress or
ButtonRelease event is reported to the client, at which time the pointer again
appears to freeze. However, if the reported event causes the pointer grab to be
released, then the pointer does not freeze. SyncPointer has no effect if the
pointer is not frozen by the client or if the pointer is not grabbed by the
client.

For ReplayPointer, if the pointer is actively grabbed by the client and is
frozen as the result of an event having been sent to the client (either from
the activation of a GrabButton or from a previous AllowEvents with mode 
SyncPointer but not from a GrabPointer), then the pointer grab is released and
that event is completely reprocessed, this time ignoring any passive grabs at
or above (towards the root) the grab-window of the grab just released. The
request has no effect if the pointer is not grabbed by the client or if the
pointer is not frozen as the result of an event.

For AsyncKeyboard, if the keyboard is frozen by the client, keyboard event
processing continues normally. If the keyboard is frozen twice by the client on
behalf of two separate grabs, AsyncKeyboard thaws for both. AsyncKeyboard has
no effect if the keyboard is not frozen by the client, but the keyboard need
not be grabbed by the client.

For SyncKeyboard, if the keyboard is frozen and actively grabbed by the client,
keyboard event processing continues normally until the next KeyPress or
KeyRelease event is reported to the client, at which time the keyboard again
appears to freeze. However, if the reported event causes the keyboard grab to
be released, then the keyboard does not freeze. SyncKeyboard has no effect if
the keyboard is not frozen by the client or if the keyboard is not grabbed by
the client.

For ReplayKeyboard, if the keyboard is actively grabbed by the client and is
frozen as the result of an event having been sent to the client (either from
the activation of a GrabKey or from a previous AllowEvents with mode 
SyncKeyboard but not from a GrabKeyboard), then the keyboard grab is released
and that event is completely reprocessed, this time ignoring any passive grabs
at or above (towards the root) the grab-window of the grab just released. The
request has no effect if the keyboard is not grabbed by the client or if the
keyboard is not frozen as the result of an event.

For SyncBoth, if both pointer and keyboard are frozen by the client, event
processing (for both devices) continues normally until the next ButtonPress,
ButtonRelease, KeyPress, or KeyRelease event is reported to the client for a
grabbed device (button event for the pointer, key event for the keyboard), at
which time the devices again appear to freeze. However, if the reported event
causes the grab to be released, then the devices do not freeze (but if the
other device is still grabbed, then a subsequent event for it will still cause
both devices to freeze). SyncBoth has no effect unless both pointer and
keyboard are frozen by the client. If the pointer or keyboard is frozen twice
by the client on behalf of two separate grabs, SyncBoth thaws for both (but a
subsequent freeze for SyncBoth will only freeze each device once).

For AsyncBoth, if the pointer and the keyboard are frozen by the client, event
processing for both devices continues normally. If a device is frozen twice by
the client on behalf of two separate grabs, AsyncBoth thaws for both. AsyncBoth
has no effect unless both pointer and keyboard are frozen by the client.

AsyncPointer, SyncPointer, and ReplayPointer have no effect on processing of
keyboard events. AsyncKeyboard, SyncKeyboard, and ReplayKeyboard have no effect
on processing of pointer events.

It is possible for both a pointer grab and a keyboard grab to be active
simultaneously (by the same or different clients). When a device is frozen on
behalf of either grab, no event processing is performed for the device. It is
possible for a single device to be frozen because of both grabs. In this case,
the freeze must be released on behalf of both grabs before events can again be
processed. If a device is frozen twice by a single client, then a single 
AllowEvents releases both.

GrabServer

This request disables processing of requests and close-downs on all connections
other than the one this request arrived on.

UngrabServer

This request restarts processing of requests and close-downs on other
connections.

QueryPointer

window: WINDOW
▶
root: WINDOW
child: WINDOW or None
same-screen: BOOL
root-x, root-y, win-x, win-y: INT16
mask: SETofKEYBUTMASK
Errors: Window

The root window the pointer is logically on and the pointer coordinates
relative to the root's origin are returned. If same-screen is False, then the
pointer is not on the same screen as the argument window, child is None, and
win-x and win-y are zero. If same-screen is True, then win-x and win-y are the
pointer coordinates relative to the argument window's origin, and child is the
child containing the pointer, if any. The current logical state of the modifier
keys and the buttons are also returned. Note that the logical state of a device
(as seen by means of the protocol) may lag the physical state if device event
processing is frozen.

GetMotionEvents

start, stop: TIMESTAMP or CurrentTime
window: WINDOW
▶
events: LISTofTIMECOORD
where:
TIMECOORD: [x, y: INT16
time: TIMESTAMP]
Errors: Window

This request returns all events in the motion history buffer that fall between
the specified start and stop times (inclusive) and that have coordinates that
lie within (including borders) the specified window at its present placement.
The x and y coordinates are reported relative to the origin of the window.

If the start time is later than the stop time or if the start time is in the
future, no events are returned. If the stop time is in the future, it is
equivalent to specifying CurrentTime.

TranslateCoordinates

src-window, dst-window: WINDOW
src-x, src-y: INT16
▶
same-screen: BOOL
child: WINDOW or None
dst-x, dst-y: INT16
Errors: Window

The src-x and src-y coordinates are taken relative to src-window's origin and
are returned as dst-x and dst-y coordinates relative to dst-window's origin. If
same-screen is False, then src-window and dst-window are on different screens,
and dst-x and dst-y are zero. If the coordinates are contained in a mapped
child of dst-window, then that child is returned.

WarpPointer

src-window: WINDOW or None
dst-window: WINDOW or None
src-x, src-y: INT16
src-width, src-height: CARD16
dst-x, dst-y: INT16
Errors: Window

If dst-window is None, this request moves the pointer by offsets [dst-x, dst-y]
relative to the current position of the pointer. If dst-window is a window,
this request moves the pointer to [dst-x, dst-y] relative to dst-window's
origin. However, if src-window is not None, the move only takes place if
src-window contains the pointer and the pointer is contained in the specified
rectangle of src-window.

The src-x and src-y coordinates are relative to src-window's origin. If
src-height is zero, it is replaced with the current height of src-window minus
src-y. If src-width is zero, it is replaced with the current width of
src-window minus src-x.

This request cannot be used to move the pointer outside the confine-to window
of an active pointer grab. An attempt will only move the pointer as far as the
closest edge of the confine-to window.

This request will generate events just as if the user had instantaneously moved
the pointer.

SetInputFocus

focus: WINDOW or PointerRoot or None
revert-to: { Parent, PointerRoot, None}
time: TIMESTAMP or CurrentTime
Errors: Match, Value, Window

This request changes the input focus and the last-focus-change time. The
request has no effect if the specified time is earlier than the current
last-focus-change time or is later than the current server time. Otherwise, the
last-focus-change time is set to the specified time with CurrentTime replaced
by the current server time.

If None is specified as the focus, all keyboard events are discarded until a
new focus window is set. In this case, the revert-to argument is ignored.

If a window is specified as the focus, it becomes the keyboard's focus window.
If a generated keyboard event would normally be reported to this window or one
of its inferiors, the event is reported normally. Otherwise, the event is
reported with respect to the focus window.

If PointerRoot is specified as the focus, the focus window is dynamically taken
to be the root window of whatever screen the pointer is on at each keyboard
event. In this case, the revert-to argument is ignored.

This request generates FocusIn and FocusOut events.

The specified focus window must be viewable at the time of the request (or a 
Match error results). If the focus window later becomes not viewable, the new
focus window depends on the revert-to argument. If revert-to is Parent, the
focus reverts to the parent (or the closest viewable ancestor) and the new
revert-to value is taken to be None. If revert-to is PointerRoot or None, the
focus reverts to that value. When the focus reverts, FocusIn and FocusOut
events are generated, but the last-focus-change time is not affected.

GetInputFocus

▶
focus: WINDOW or PointerRoot or None
revert-to: { Parent, PointerRoot, None}

This request returns the current focus state.

QueryKeymap

▶
keys: LISTofCARD8

This request returns a bit vector for the logical state of the keyboard. Each
bit set to 1 indicates that the corresponding key is currently pressed. The
vector is represented as 32 bytes. Byte N (from 0) contains the bits for keys
8N to 8N + 7 with the least significant bit in the byte representing key 8N.
Note that the logical state of a device (as seen by means of the protocol) may
lag the physical state if device event processing is frozen.

OpenFont

fid: FONT
name: STRING8
Errors: Alloc, IDChoice, Name

This request loads the specified font, if necessary, and associates identifier
fid with it. The font name should use the ISO Latin-1 encoding, and uppercase
and lowercase do not matter. When the characters “?” and “*” are used in a font
name, a pattern match is performed and any matching font is used. In the
pattern, the “?” character (octal value 77) will match any single character,
and the “*” character (octal value 52) will match any number of characters. A
structured format for font names is specified in the X.Org standard X Logical
Font Description Conventions.

Fonts are not associated with a particular screen and can be stored as a
component of any graphics context.

CloseFont

font: FONT
Errors: Font

This request deletes the association between the resource ID and the font. The
font itself will be freed when no other resource references it.

QueryFont

font: FONTABLE
▶
font-info: FONTINFO
char-infos: LISTofCHARINFO
where:            
       FONTINFO: [draw-direction: { LeftToRight, RightToLeft }
                 min-char-or-byte2, max-char-or-byte2: CARD16
                 min-byte1, max-byte1: CARD8
                 all-chars-exist: BOOL
                 default-char: CARD16
                 min-bounds: CHARINFO
                 max-bounds: CHARINFO
                 font-ascent: INT16
                 font-descent: INT16
                 properties: LISTofFONTPROP]
       FONTPROP: [name: ATOM
                 value: <32-bit-value>]
       CHARINFO: [left-side-bearing: INT16
                 right-side-bearing: INT16
                 character-width: INT16
                 ascent: INT16
                 descent: INT16
                 attributes: CARD16]
Errors: Font

This request returns logical information about a font. If a gcontext is given
for font, the currently contained font is used.

The draw-direction is just a hint and indicates whether most char-infos have a
positive, LeftToRight, or a negative, RightToLeft, character-width metric. The
core protocol defines no support for vertical text.

If min-byte1 and max-byte1 are both zero, then min-char-or-byte2 specifies the
linear character index corresponding to the first element of char-infos, and
max-char-or-byte2 specifies the linear character index of the last element. If
either min-byte1 or max-byte1 are nonzero, then both min-char-or-byte2 and
max-char-or-byte2 will be less than 256, and the 2-byte character index values
corresponding to char-infos element N (counting from 0) are:

        byte1 = N/D + min-byte1
        byte2 = N\\D + min-char-or-byte2

where:

        D = max-char-or-byte2 - min-char-or-byte2 + 1
        / = integer division
        \\ = integer modulus

If char-infos has length zero, then min-bounds and max-bounds will be
identical, and the effective char-infos is one filled with this char-info, of
length:

        L = D * (max-byte1 - min-byte1 + 1)

That is, all glyphs in the specified linear or matrix range have the same
information, as given by min-bounds (and max-bounds). If all-chars-exist is 
True, then all characters in char-infos have nonzero bounding boxes.

The default-char specifies the character that will be used when an undefined or
nonexistent character is used. Note that default-char is a CARD16, not CHAR2B.
For a font using 2-byte matrix format, the default-char has byte1 in the most
significant byte and byte2 in the least significant byte. If the default-char
itself specifies an undefined or nonexistent character, then no printing is
performed for an undefined or nonexistent character.

The min-bounds and max-bounds contain the minimum and maximum values of each
individual CHARINFO component over all char-infos (ignoring nonexistent
characters). The bounding box of the font (that is, the smallest rectangle
enclosing the shape obtained by superimposing all characters at the same origin
[x,y]) has its upper-left coordinate at:

        [x + min-bounds.left-side-bearing, y - max-bounds.ascent]

with a width of:

        max-bounds.right-side-bearing - min-bounds.left-side-bearing

and a height of:

        max-bounds.ascent + max-bounds.descent

The font-ascent is the logical extent of the font above the baseline and is
used for determining line spacing. Specific characters may extend beyond this.
The font-descent is the logical extent of the font at or below the baseline and
is used for determining line spacing. Specific characters may extend beyond
this. If the baseline is at Y-coordinate y, then the logical extent of the font
is inclusive between the Y-coordinate values (y - font-ascent) and (y +
font-descent - 1).

A font is not guaranteed to have any properties. The interpretation of the
property value (for example, INT32, CARD32) must be derived from a priori
knowledge of the property. A basic set of font properties is specified in the
X.Org standard X Logical Font Description Conventions.

For a character origin at [x,y], the bounding box of a character (that is, the
smallest rectangle enclosing the character's shape), described in terms of
CHARINFO components, is a rectangle with its upper-left corner at:

        [x + left-side-bearing, y - ascent]

with a width of:

        right-side-bearing - left-side-bearing

and a height of:

        ascent + descent

and the origin for the next character is defined to be:

        [x + character-width, y]

Note that the baseline is logically viewed as being just below nondescending
characters (when descent is zero, only pixels with Y-coordinates less than y
are drawn) and that the origin is logically viewed as being coincident with the
left edge of a nonkerned character (when left-side-bearing is zero, no pixels
with X-coordinate less than x are drawn).

Note that CHARINFO metric values can be negative.

A nonexistent character is represented with all CHARINFO components zero.

The interpretation of the per-character attributes field is server-dependent.

QueryTextExtents

font: FONTABLE
string: STRING16
▶
draw-direction: { LeftToRight, RightToLeft}
font-ascent: INT16
font-descent: INT16
overall-ascent: INT16
overall-descent: INT16
overall-width: INT32
overall-left: INT32
overall-right: INT32
Errors: Font

This request returns the logical extents of the specified string of characters
in the specified font. If a gcontext is given for font, the currently contained
font is used. The draw-direction, font-ascent, and font-descent are the same as
described in QueryFont. The overall-ascent is the maximum of the ascent metrics
of all characters in the string, and the overall-descent is the maximum of the
descent metrics. The overall-width is the sum of the character-width metrics of
all characters in the string. For each character in the string, let W be the
sum of the character-width metrics of all characters preceding it in the
string, let L be the left-side-bearing metric of the character plus W, and let
R be the right-side-bearing metric of the character plus W. The overall-left is
the minimum L of all characters in the string, and the overall-right is the
maximum R.

For fonts defined with linear indexing rather than 2-byte matrix indexing, the
server will interpret each CHAR2B as a 16-bit number that has been transmitted
most significant byte first (that is, byte1 of the CHAR2B is taken as the most
significant byte).

Characters with all zero metrics are ignored. If the font has no defined
default-char, then undefined characters in the string are also ignored.

ListFonts

pattern: STRING8
max-names: CARD16
▶
names: LISTofSTRING8

This request returns a list of available font names (as controlled by the font
search path; see SetFontPath request) that match the pattern. At most,
max-names names will be returned. The pattern should use the ISO Latin-1
encoding, and uppercase and lowercase do not matter. In the pattern, the “?”
character (octal value 77) will match any single character, and the “*”
character (octal value 52) will match any number of characters. The returned
names are in lowercase.

ListFontsWithInfo

pattern: STRING8
max-names: CARD16
▶
name: STRING8
info FONTINFO
replies-hint: CARD32
where:
FONTINFO: <same type definition as in QueryFont>

This request is similar to ListFonts, but it also returns information about
each font. The information returned for each font is identical to what
QueryFont would return except that the per-character metrics are not returned.
Note that this request can generate multiple replies. With each reply,
replies-hint may provide an indication of how many more fonts will be returned.
This number is a hint only and may be larger or smaller than the number of
fonts actually returned. A zero value does not guarantee that no more fonts
will be returned. After the font replies, a reply with a zero-length name is
sent to indicate the end of the reply sequence.

SetFontPath

path: LISTofSTRING8
Errors: Value

This request defines the search path for font lookup. There is only one search
path per server, not one per client. The interpretation of the strings is
operating-system-dependent, but the strings are intended to specify directories
to be searched in the order listed.

Setting the path to the empty list restores the default path defined for the
server.

As a side effect of executing this request, the server is guaranteed to flush
all cached information about fonts for which there currently are no explicit
resource IDs allocated.

The meaning of an error from this request is system specific.

GetFontPath

▶
path: LISTofSTRING8

This request returns the current search path for fonts.

CreatePixmap

pid: PIXMAP
drawable: DRAWABLE
depth: CARD8
width, height: CARD16
Errors: Alloc, Drawable, IDChoice, Value

This request creates a pixmap and assigns the identifier pid to it. The width
and height must be nonzero (or a Value error results). The depth must be one of
the depths supported by the root of the specified drawable (or a Value error
results). The initial contents of the pixmap are undefined.

It is legal to pass an InputOnly window as a drawable to this request.

FreePixmap

pixmap: PIXMAP
Errors: Pixmap

This request deletes the association between the resource ID and the pixmap.
The pixmap storage will be freed when no other resource references it.

CreateGC

cid: GCONTEXT
drawable: DRAWABLE
value-mask: BITMASK
value-list: LISTofVALUE
Errors: Alloc, Drawable, Font, IDChoice, Match, Pixmap, Value

This request creates a graphics context and assigns the identifier cid to it.
The gcontext can be used with any destination drawable having the same root and
depth as the specified drawable; use with other drawables results in a Match
error.

The value-mask and value-list specify which components are to be explicitly
initialized. The context components are:

┌─────────────────────┬───────────────────────────────────────────────────────┐
│Component            │Type                                                   │
├─────────────────────┼───────────────────────────────────────────────────────┤
│                     │{ Clear, And, AndReverse, Copy, AndInverted, NoOp, Xor,│
│function             │Or, Nor, Equiv, Invert, OrReverse, CopyInverted,       │
│                     │OrInverted, Nand, Set }                                │
├─────────────────────┼───────────────────────────────────────────────────────┤
│plane-mask           │CARD32                                                 │
├─────────────────────┼───────────────────────────────────────────────────────┤
│foreground           │CARD32                                                 │
├─────────────────────┼───────────────────────────────────────────────────────┤
│background           │CARD32                                                 │
├─────────────────────┼───────────────────────────────────────────────────────┤
│line-width           │CARD16                                                 │
├─────────────────────┼───────────────────────────────────────────────────────┤
│line-style           │{ Solid, OnOffDash, DoubleDash }                       │
├─────────────────────┼───────────────────────────────────────────────────────┤
│cap-style            │{ NotLast, Butt, Round, Projecting }                   │
├─────────────────────┼───────────────────────────────────────────────────────┤
│join-style           │{ Miter, Round, Bevel }                                │
├─────────────────────┼───────────────────────────────────────────────────────┤
│fill-style           │{ Solid, Tiled, OpaqueStippled, Stippled }             │
├─────────────────────┼───────────────────────────────────────────────────────┤
│fill-rule            │{ EvenOdd, Winding }                                   │
├─────────────────────┼───────────────────────────────────────────────────────┤
│arc-mode             │{ Chord, PieSlice }                                    │
├─────────────────────┼───────────────────────────────────────────────────────┤
│tile                 │PIXMAP                                                 │
├─────────────────────┼───────────────────────────────────────────────────────┤
│stipple              │PIXMAP                                                 │
├─────────────────────┼───────────────────────────────────────────────────────┤
│tile-stipple-x-origin│INT16                                                  │
├─────────────────────┼───────────────────────────────────────────────────────┤
│tile-stipple-y-origin│INT16                                                  │
├─────────────────────┼───────────────────────────────────────────────────────┤
│font                 │FONT                                                   │
├─────────────────────┼───────────────────────────────────────────────────────┤
│subwindow-mode       │{ ClipByChildren, IncludeInferiors }                   │
├─────────────────────┼───────────────────────────────────────────────────────┤
│graphics-exposures   │BOOL                                                   │
├─────────────────────┼───────────────────────────────────────────────────────┤
│clip-x-origin        │INT16                                                  │
├─────────────────────┼───────────────────────────────────────────────────────┤
│clip-y-origin        │INT16                                                  │
├─────────────────────┼───────────────────────────────────────────────────────┤
│clip-mask            │PIXMAP or None                                         │
├─────────────────────┼───────────────────────────────────────────────────────┤
│dash-offset          │CARD16                                                 │
├─────────────────────┼───────────────────────────────────────────────────────┤
│dashes               │CARD8                                                  │
└─────────────────────┴───────────────────────────────────────────────────────┘

In graphics operations, given a source and destination pixel, the result is
computed bitwise on corresponding bits of the pixels; that is, a Boolean
operation is performed in each bit plane. The plane-mask restricts the
operation to a subset of planes, so the result is:

        ((src FUNC dst) AND plane-mask) OR (dst AND (NOT plane-mask))

Range checking is not performed on the values for foreground, background, or
plane-mask. They are simply truncated to the appropriate number of bits.

The meanings of the functions are:

┌────────────┬───────────────────────┐
│Function    │Operation              │
├────────────┼───────────────────────┤
│Clear       │0                      │
├────────────┼───────────────────────┤
│And         │src AND dst            │
├────────────┼───────────────────────┤
│AndReverse  │src AND (NOT dst)      │
├────────────┼───────────────────────┤
│Copy        │src                    │
├────────────┼───────────────────────┤
│AndInverted │(NOT src) AND dst      │
├────────────┼───────────────────────┤
│NoOp        │dst                    │
├────────────┼───────────────────────┤
│Xor         │src XOR dst            │
├────────────┼───────────────────────┤
│Or          │src OR dst             │
├────────────┼───────────────────────┤
│Nor         │(NOT src) AND (NOT dst)│
├────────────┼───────────────────────┤
│Equiv       │(NOT src) XOR dst      │
├────────────┼───────────────────────┤
│Invert      │NOT dst                │
├────────────┼───────────────────────┤
│OrReverse   │src OR (NOT dst)       │
├────────────┼───────────────────────┤
│CopyInverted│NOT src                │
├────────────┼───────────────────────┤
│OrInverted  │(NOT src) OR dst       │
├────────────┼───────────────────────┤
│Nand        │(NOT src) OR (NOT dst) │
├────────────┼───────────────────────┤
│Set         │1                      │
└────────────┴───────────────────────┘

The line-width is measured in pixels and can be greater than or equal to one, a
wide line, or the special value zero, a thin line.

Wide lines are drawn centered on the path described by the graphics request.
Unless otherwise specified by the join or cap style, the bounding box of a wide
line with endpoints [x1, y1], [x2, y2] and width w is a rectangle with vertices
at the following real coordinates:

        [x1-(w*sn/2), y1+(w*cs/2)], [x1+(w*sn/2), y1-(w*cs/2)],
        [x2-(w*sn/2), y2+(w*cs/2)], [x2+(w*sn/2), y2-(w*cs/2)]

The sn is the sine of the angle of the line and cs is the cosine of the angle
of the line. A pixel is part of the line (and hence drawn) if the center of the
pixel is fully inside the bounding box, which is viewed as having infinitely
thin edges. If the center of the pixel is exactly on the bounding box, it is
part of the line if and only if the interior is immediately to its right (x
increasing direction). Pixels with centers on a horizontal edge are a special
case and are part of the line if and only if the interior or the boundary is
immediately below (y increasing direction) and if the interior or the boundary
is immediately to the right (x increasing direction). Note that this
description is a mathematical model describing the pixels that are drawn for a
wide line and does not imply that trigonometry is required to implement such a
model. Real or fixed point arithmetic is recommended for computing the corners
of the line endpoints for lines greater than one pixel in width.

Thin lines (zero line-width) are nominally one pixel wide lines drawn using an
unspecified, device-dependent algorithm. There are only two constraints on this
algorithm. First, if a line is drawn unclipped from [x1,y1] to [x2,y2] and
another line is drawn unclipped from [x1+dx,y1+dy] to [x2+dx,y2+dy], then a
point [x,y] is touched by drawing the first line if and only if the point
[x+dx,y+dy] is touched by drawing the second line. Second, the effective set of
points comprising a line cannot be affected by clipping. Thus, a point is
touched in a clipped line if and only if the point lies inside the clipping
region and the point would be touched by the line when drawn unclipped.

Note that a wide line drawn from [x1,y1] to [x2,y2] always draws the same
pixels as a wide line drawn from [x2,y2] to [x1,y1], not counting cap-style and
join-style. Implementors are encouraged to make this property true for thin
lines, but it is not required. A line-width of zero may differ from a
line-width of one in which pixels are drawn. In general, drawing a thin line
will be faster than drawing a wide line of width one, but thin lines may not
mix well aesthetically with wide lines because of the different drawing
algorithms. If it is desirable to obtain precise and uniform results across all
displays, a client should always use a line-width of one, rather than a
line-width of zero.

The line-style defines which sections of a line are drawn:

Solid      The full path of the line is drawn.
           The full path of the line is drawn, but the even dashes are filled
DoubleDash differently than the odd dashes (see fill-style), with Butt
           cap-style used where even and odd dashes meet.
           Only the even dashes are drawn, and cap-style applies to all
OnOffDash  internal ends of the individual dashes (except NotLast is treated as
           Butt).

The cap-style defines how the endpoints of a path are drawn:

NotLast    The result is equivalent to Butt, except that for a line-width of
           zero the final endpoint is not drawn.
Butt       The result is square at the endpoint (perpendicular to the slope of
           the line) with no projection beyond.
           The result is a circular arc with its diameter equal to the
Round      line-width, centered on the endpoint; it is equivalent to Butt for
           line-width zero.
           The result is square at the end, but the path continues beyond the
Projecting endpoint for a distance equal to half the line-width; it is
           equivalent to Butt for line-width zero.

The join-style defines how corners are drawn for wide lines:

Miter The outer edges of the two lines extend to meet at an angle. However, if
      the angle is less than 11 degrees, a Bevel join-style is used instead.
Round The result is a circular arc with a diameter equal to the line-width,
      centered on the joinpoint.
Bevel The result is Butt endpoint styles, and then the triangular notch is
      filled.

For a line with coincident endpoints (x1=x2, y1=y2), when the cap-style is
applied to both endpoints, the semantics depends on the line-width and the
cap-style:

NotLast    thin This is device-dependent, but the desired effect is that
                nothing is drawn.
Butt       thin This is device-dependent, but the desired effect is that a
                single pixel is drawn.
Round      thin This is the same as Butt/thin.
Projecting thin This is the same as Butt/thin.
Butt       wide Nothing is drawn.
Round      wide The closed path is a circle, centered at the endpoint and with
                a diameter equal to the line-width.
                The closed path is a square, aligned with the coordinate axes,
Projecting wide centered at the endpoint and with sides equal to the
                line-width.

For a line with coincident endpoints (x1=x2, y1=y2), when the join-style is
applied at one or both endpoints, the effect is as if the line was removed from
the overall path. However, if the total path consists of (or is reduced to) a
single point joined with itself, the effect is the same as when the cap-style
is applied at both endpoints.

The tile/stipple represents an infinite two-dimensional plane with the tile/
stipple replicated in all dimensions. When that plane is superimposed on the
drawable for use in a graphics operation, the upper-left corner of some
instance of the tile/stipple is at the coordinates within the drawable
specified by the tile/stipple origin. The tile/stipple and clip origins are
interpreted relative to the origin of whatever destination drawable is
specified in a graphics request.

The tile pixmap must have the same root and depth as the gcontext (or a Match
error results). The stipple pixmap must have depth one and must have the same
root as the gcontext (or a Match error results). For fill-style Stippled (but
not fill-style OpaqueStippled), the stipple pattern is tiled in a single plane
and acts as an additional clip mask to be ANDed with the clip-mask. Any size
pixmap can be used for tiling or stippling, although some sizes may be faster
to use than others.

The fill-style defines the contents of the source for line, text, and fill
requests. For all text and fill requests (for example, PolyText8, PolyText16,
PolyFillRectangle, FillPoly, and PolyFillArc) as well as for line requests with
line-style Solid, (for example, PolyLine, PolySegment, PolyRectangle, PolyArc )
and for the even dashes for line requests with line-style OnOffDash or 
DoubleDash:

Solid          Foreground
Tiled          Tile
               A tile with the same width and height as stipple but with
OpaqueStippled background everywhere stipple has a zero and with foreground
               everywhere stipple has a one
Stippled       Foreground masked by stipple

For the odd dashes for line requests with line-style DoubleDash:

Solid          Background
Tiled          Same as for even dashes
OpaqueStippled Same as for even dashes
Stippled       Background masked by stipple

The dashes value allowed here is actually a simplified form of the more general
patterns that can be set with SetDashes. Specifying a value of N here is
equivalent to specifying the two element list [N, N] in SetDashes. The value
must be nonzero (or a Value error results). The meaning of dash-offset and
dashes are explained in the SetDashes request.

The clip-mask restricts writes to the destination drawable. Only pixels where
the clip-mask has bits set to 1 are drawn. Pixels are not drawn outside the
area covered by the clip-mask or where the clip-mask has bits set to 0. The
clip-mask affects all graphics requests, but it does not clip sources. The
clip-mask origin is interpreted relative to the origin of whatever destination
drawable is specified in a graphics request. If a pixmap is specified as the
clip-mask, it must have depth 1 and have the same root as the gcontext (or a 
Match error results). If clip-mask is None, then pixels are always drawn,
regardless of the clip origin. The clip-mask can also be set with the
SetClipRectangles request.

For ClipByChildren, both source and destination windows are additionally
clipped by all viewable InputOutput children. For IncludeInferiors, neither
source nor destination window is clipped by inferiors. This will result in
including subwindow contents in the source and drawing through subwindow
boundaries of the destination. The use of IncludeInferiors with a source or
destination window of one depth with mapped inferiors of differing depth is not
illegal, but the semantics is undefined by the core protocol.

The fill-rule defines what pixels are inside (that is, are drawn) for paths
given in FillPoly requests. EvenOdd means a point is inside if an infinite ray
with the point as origin crosses the path an odd number of times. For Winding,
a point is inside if an infinite ray with the point as origin crosses an
unequal number of clockwise and counterclockwise directed path segments. A
clockwise directed path segment is one that crosses the ray from left to right
as observed from the point. A counter-clockwise segment is one that crosses the
ray from right to left as observed from the point. The case where a directed
line segment is coincident with the ray is uninteresting because one can simply
choose a different ray that is not coincident with a segment.

For both fill rules, a point is infinitely small and the path is an infinitely
thin line. A pixel is inside if the center point of the pixel is inside and the
center point is not on the boundary. If the center point is on the boundary,
the pixel is inside if and only if the polygon interior is immediately to its
right (x increasing direction). Pixels with centers along a horizontal edge are
a special case and are inside if and only if the polygon interior is
immediately below (y increasing direction).

The arc-mode controls filling in the PolyFillArc request.

The graphics-exposures flag controls GraphicsExposure event generation for
CopyArea and CopyPlane requests (and any similar requests defined by
extensions).

The default component values are:

┌─────────────────────┬───────────────────────────────────────────────────────┐
│Component            │Default                                                │
├─────────────────────┼───────────────────────────────────────────────────────┤
│function             │Copy                                                   │
├─────────────────────┼───────────────────────────────────────────────────────┤
│plane-mask           │all ones                                               │
├─────────────────────┼───────────────────────────────────────────────────────┤
│foreground           │0                                                      │
├─────────────────────┼───────────────────────────────────────────────────────┤
│background           │1                                                      │
├─────────────────────┼───────────────────────────────────────────────────────┤
│line-width           │0                                                      │
├─────────────────────┼───────────────────────────────────────────────────────┤
│line-style           │Solid                                                  │
├─────────────────────┼───────────────────────────────────────────────────────┤
│cap-style            │Butt                                                   │
├─────────────────────┼───────────────────────────────────────────────────────┤
│join-style           │Miter                                                  │
├─────────────────────┼───────────────────────────────────────────────────────┤
│fill-style           │Solid                                                  │
├─────────────────────┼───────────────────────────────────────────────────────┤
│fill-rule            │EvenOdd                                                │
├─────────────────────┼───────────────────────────────────────────────────────┤
│arc-mode             │PieSlice                                               │
├─────────────────────┼───────────────────────────────────────────────────────┤
│                     │Pixmap of unspecified size filled with foreground pixel│
│                     │                                                       │
│tile                 │(that is, client specified pixel if any, else 0)       │
│                     │                                                       │
│                     │(subsequent changes to foreground do not affect this   │
│                     │pixmap)                                                │
├─────────────────────┼───────────────────────────────────────────────────────┤
│stipple              │Pixmap of unspecified size filled with ones            │
├─────────────────────┼───────────────────────────────────────────────────────┤
│tile-stipple-x-origin│0                                                      │
├─────────────────────┼───────────────────────────────────────────────────────┤
│tile-stipple-y-origin│0                                                      │
├─────────────────────┼───────────────────────────────────────────────────────┤
│font                 │<server-dependent-font>                                │
├─────────────────────┼───────────────────────────────────────────────────────┤
│subwindow-mode       │ClipByChildren                                         │
├─────────────────────┼───────────────────────────────────────────────────────┤
│graphics-exposures   │True                                                   │
├─────────────────────┼───────────────────────────────────────────────────────┤
│clip-x-origin        │0                                                      │
├─────────────────────┼───────────────────────────────────────────────────────┤
│clip-y-origin        │0                                                      │
├─────────────────────┼───────────────────────────────────────────────────────┤
│clip-mask            │None                                                   │
├─────────────────────┼───────────────────────────────────────────────────────┤
│dash-offset          │0                                                      │
├─────────────────────┼───────────────────────────────────────────────────────┤
│dashes               │4 (that is, the list [4, 4])                           │
└─────────────────────┴───────────────────────────────────────────────────────┘

Storing a pixmap in a gcontext might or might not result in a copy being made.
If the pixmap is later used as the destination for a graphics request, the
change might or might not be reflected in the gcontext. If the pixmap is used
simultaneously in a graphics request as both a destination and as a tile or
stipple, the results are not defined.

It is quite likely that some amount of gcontext information will be cached in
display hardware and that such hardware can only cache a small number of
gcontexts. Given the number and complexity of components, clients should view
switching between gcontexts with nearly identical state as significantly more
expensive than making minor changes to a single gcontext.

ChangeGC

gc: GCONTEXT
value-mask: BITMASK
value-list: LISTofVALUE
Errors: Alloc, Font, GContext, Match, Pixmap, Value

This request changes components in gc. The value-mask and value-list specify
which components are to be changed. The values and restrictions are the same as
for CreateGC.

Changing the clip-mask also overrides any previous SetClipRectangles request on
the context. Changing dash-offset or dashes overrides any previous SetDashes
request on the context.

The order in which components are verified and altered is server-dependent. If
an error is generated, a subset of the components may have been altered.

CopyGC

src-gc, dst-gc: GCONTEXT
value-mask: BITMASK
Errors: Alloc, GContext, Match, Value

This request copies components from src-gc to dst-gc. The value-mask specifies
which components to copy, as for CreateGC. The two gcontexts must have the same
root and the same depth (or a Match error results).

SetDashes

gc: GCONTEXT
dash-offset: CARD16
dashes: LISTofCARD8
Errors: Alloc, GContext, Value

This request sets dash-offset and dashes in gc for dashed line styles. Dashes
cannot be empty (or a Value error results). Specifying an odd-length list is
equivalent to specifying the same list concatenated with itself to produce an
even-length list. The initial and alternating elements of dashes are the even
dashes; the others are the odd dashes. Each element specifies a dash length in
pixels. All of the elements must be nonzero (or a Value error results). The
dash-offset defines the phase of the pattern, specifying how many pixels into
dashes the pattern should actually begin in any single graphics request.
Dashing is continuous through path elements combined with a join-style but is
reset to the dash-offset between each sequence of joined lines.

The unit of measure for dashes is the same as in the ordinary coordinate
system. Ideally, a dash length is measured along the slope of the line, but
implementations are only required to match this ideal for horizontal and
vertical lines. Failing the ideal semantics, it is suggested that the length be
measured along the major axis of the line. The major axis is defined as the x
axis for lines drawn at an angle of between -45 and +45 degrees or between 135
and 225 degrees from the x axis. For all other lines, the major axis is the y
axis.

For any graphics primitive, the computation of the endpoint of an individual
dash only depends on the geometry of the primitive, the start position of the
dash, the direction of the dash, and the dash length.

For any graphics primitive, the total set of pixels used to render the
primitive (both even and odd numbered dash elements) with DoubleDash line-style
is the same as the set of pixels used to render the primitive with Solid
line-style.

For any graphics primitive, if the primitive is drawn with OnOffDash or 
DoubleDash line-style unclipped at position [x,y] and again at position
[x+dx,y+dy], then a point [x1,y1] is included in a dash in the first instance
if and only if the point [x1+dx,y1+dy] is included in the dash in the second
instance. In addition, the effective set of points comprising a dash cannot be
affected by clipping. A point is included in a clipped dash if and only if the
point lies inside the clipping region and the point would be included in the
dash when drawn unclipped.

SetClipRectangles

gc: GCONTEXT
clip-x-origin, clip-y-origin: INT16
rectangles: LISTofRECTANGLE
ordering: { UnSorted, YSorted, YXSorted, YXBanded}
Errors: Alloc, GContext, Match, Value

This request changes clip-mask in gc to the specified list of rectangles and
sets the clip origin. Output will be clipped to remain contained within the
rectangles. The clip origin is interpreted relative to the origin of whatever
destination drawable is specified in a graphics request. The rectangle
coordinates are interpreted relative to the clip origin. The rectangles should
be nonintersecting, or graphics results will be undefined. Note that the list
of rectangles can be empty, which effectively disables output. This is the
opposite of passing None as the clip-mask in CreateGC and ChangeGC.

If known by the client, ordering relations on the rectangles can be specified
with the ordering argument. This may provide faster operation by the server. If
an incorrect ordering is specified, the server may generate a Match error, but
it is not required to do so. If no error is generated, the graphics results are
undefined. UnSorted means that the rectangles are in arbitrary order. YSorted
means that the rectangles are nondecreasing in their Y origin. YXSorted
additionally constrains YSorted order in that all rectangles with an equal Y
origin are nondecreasing in their X origin. YXBanded additionally constrains 
YXSorted by requiring that, for every possible Y scanline, all rectangles that
include that scanline have identical Y origins and Y extents.

FreeGC

gc: GCONTEXT
Errors: GContext

This request deletes the association between the resource ID and the gcontext
and destroys the gcontext.

ClearArea

window: WINDOW
x, y: INT16
width, height: CARD16
exposures: BOOL
Errors: Match, Value, Window

The x and y coordinates are relative to the window's origin and specify the
upper-left corner of the rectangle. If width is zero, it is replaced with the
current width of the window minus x. If height is zero, it is replaced with the
current height of the window minus y. If the window has a defined background
tile, the rectangle is tiled with a plane-mask of all ones and function of Copy
and a subwindow-mode of ClipByChildren. If the window has background None, the
contents of the window are not changed. In either case, if exposures is True,
then one or more exposure events are generated for regions of the rectangle
that are either visible or are being retained in a backing store.

It is a Match error to use an InputOnly window in this request.

CopyArea

src-drawable, dst-drawable: DRAWABLE
gc: GCONTEXT
src-x, src-y: INT16
width, height: CARD16
dst-x, dst-y: INT16
Errors: Drawable, GContext, Match

This request combines the specified rectangle of src-drawable with the
specified rectangle of dst-drawable. The src-x and src-y coordinates are
relative to src-drawable's origin. The dst-x and dst-y are relative to
dst-drawable's origin, each pair specifying the upper-left corner of the
rectangle. The src-drawable must have the same root and the same depth as
dst-drawable (or a Match error results).

If regions of the source rectangle are obscured and have not been retained in
backing store or if regions outside the boundaries of the source drawable are
specified, then those regions are not copied, but the following occurs on all
corresponding destination regions that are either visible or are retained in
backing-store. If the dst-drawable is a window with a background other than 
None, these corresponding destination regions are tiled (with plane-mask of all
ones and function Copy) with that background. Regardless of tiling and whether
the destination is a window or a pixmap, if graphics-exposures in gc is True,
then GraphicsExposure events for all corresponding destination regions are
generated.

If graphics-exposures is True but no GraphicsExposure events are generated,
then a NoExposure event is generated.

GC components: function, plane-mask, subwindow-mode, graphics-exposures,
clip-x-origin, clip-y-origin, clip-mask

CopyPlane

src-drawable, dst-drawable: DRAWABLE
gc: GCONTEXT
src-x, src-y: INT16
width, height: CARD16
dst-x, dst-y: INT16
bit-plane: CARD32
Errors: Drawable, GContext, Match, Value

The src-drawable must have the same root as dst-drawable (or a Match error
results), but it need not have the same depth. The bit-plane must have exactly
one bit set to 1 and the value of bit-plane must be less than %2 sup n% where n
is the depth of src-drawable (or a Value error results). Effectively, a pixmap
of the same depth as dst-drawable and with size specified by the source region
is formed using the foreground/background pixels in gc (foreground everywhere
the bit-plane in src-drawable contains a bit set to 1, background everywhere
the bit-plane contains a bit set to 0), and the equivalent of a CopyArea is
performed, with all the same exposure semantics. This can also be thought of as
using the specified region of the source bit-plane as a stipple with a
fill-style of OpaqueStippled for filling a rectangular area of the destination.

GC components: function, plane-mask, foreground, background, subwindow-mode,
graphics-exposures, clip-x-origin, clip-y-origin, clip-mask

PolyPoint

drawable: DRAWABLE
gc: GCONTEXT
coordinate-mode: { Origin, Previous}
points: LISTofPOINT
Errors: Drawable, GContext, Match, Value

This request combines the foreground pixel in gc with the pixel at each point
in the drawable. The points are drawn in the order listed.

The first point is always relative to the drawable's origin. The rest are
relative either to that origin or the previous point, depending on the
coordinate-mode.

GC components: function, plane-mask, foreground, subwindow-mode, clip-x-origin,
clip-y-origin, clip-mask

PolyLine

drawable: DRAWABLE
gc: GCONTEXT
coordinate-mode: { Origin, Previous}
points: LISTofPOINT
Errors: Drawable, GContext, Match, Value

This request draws lines between each pair of points (point[i], point[i+1]).
The lines are drawn in the order listed. The lines join correctly at all
intermediate points, and if the first and last points coincide, the first and
last lines also join correctly.

For any given line, no pixel is drawn more than once. If thin (zero line-width)
lines intersect, the intersecting pixels are drawn multiple times. If wide
lines intersect, the intersecting pixels are drawn only once, as though the
entire PolyLine were a single filled shape.

The first point is always relative to the drawable's origin. The rest are
relative either to that origin or the previous point, depending on the
coordinate-mode.

When either of the two lines involved in a Bevel join is neither vertical nor
horizontal, then the slope and position of the line segment defining the bevel
join edge is implementation dependent. However, the computation of the slope
and distance (relative to the join point) only depends on the line width and
the slopes of the two lines.

GC components: function, plane-mask, line-width, line-style, cap-style,
join-style, fill-style, subwindow-mode, clip-x-origin, clip-y-origin, clip-mask

GC mode-dependent components: foreground, background, tile, stipple,
tile-stipple-x-origin, tile-stipple-y-origin, dash-offset, dashes

PolySegment

drawable: DRAWABLE
gc: GCONTEXT
segments: LISTofSEGMENT
where:
SEGMENT: [x1, y1, x2, y2: INT16]
Errors: Drawable, GContext, Match

For each segment, this request draws a line between [x1, y1] and [x2, y2]. The
lines are drawn in the order listed. No joining is performed at coincident
endpoints. For any given line, no pixel is drawn more than once. If lines
intersect, the intersecting pixels are drawn multiple times.

GC components: function, plane-mask, line-width, line-style, cap-style,
fill-style, subwindow-mode, clip-x-origin, clip-y-origin, clip-mask

GC mode-dependent components: foreground, background, tile, stipple,
tile-stipple-x-origin, tile-stipple-y-origin, dash-offset, dashes

PolyRectangle

drawable: DRAWABLE
gc: GCONTEXT
rectangles: LISTofRECTANGLE
Errors: Drawable, GContext, Match

This request draws the outlines of the specified rectangles, as if a five-point
PolyLine were specified for each rectangle:

        [x,y] [x+width,y] [x+width,y+height] [x,y+height] [x,y]

The x and y coordinates of each rectangle are relative to the drawable's origin
and define the upper-left corner of the rectangle.

The rectangles are drawn in the order listed. For any given rectangle, no pixel
is drawn more than once. If rectangles intersect, the intersecting pixels are
drawn multiple times.

GC components: function, plane-mask, line-width, line-style, cap-style,
join-style, fill-style, subwindow-mode, clip-x-origin, clip-y-origin, clip-mask

GC mode-dependent components: foreground, background, tile, stipple,
tile-stipple-x-origin, tile-stipple-y-origin, dash-offset, dashes

PolyArc

drawable: DRAWABLE
gc: GCONTEXT
arcs: LISTofARC
Errors: Drawable, GContext, Match

This request draws circular or elliptical arcs. Each arc is specified by a
rectangle and two angles. The angles are signed integers in degrees scaled by
64, with positive indicating counterclockwise motion and negative indicating
clockwise motion. The start of the arc is specified by angle1 relative to the
three-o'clock position from the center of the rectangle, and the path and
extent of the arc is specified by angle2 relative to the start of the arc. If
the magnitude of angle2 is greater than 360 degrees, it is truncated to 360
degrees. The x and y coordinates of the rectangle are relative to the origin of
the drawable. For an arc specified as [x,y,w,h,a1,a2], the origin of the major
and minor axes is at [x+(w/2),y+(h/2)], and the infinitely thin path describing
the entire circle/ellipse intersects the horizontal axis at [x,y+(h/2)] and
[x+w,y+(h/2)] and intersects the vertical axis at [x+(w/2),y] and [x+(w/
2),y+h]. These coordinates are not necessarily integral; that is, they are not
truncated to discrete coordinates.

For a wide line with line-width lw, the ideal bounding outlines for filling are
given by the two infinitely thin paths consisting of all points whose
perpendicular distance from a tangent to the path of the circle/ellipse is
equal to lw/2 (which may be a fractional value). When the width and height of
the arc are not equal and both are nonzero, then the actual bounding outlines
are implementation dependent. However, the computation of the shape and
position of the bounding outlines (relative to the center of the arc) only
depends on the width and height of the arc and the line-width.

The cap-style is applied the same as for a line corresponding to the tangent of
the circle/ellipse at the endpoint. When the angle of an arc face is not an
integral multiple of 90 degrees, and the width and height of the arc are both
are nonzero, then the shape and position of the cap at that face is
implementation dependent. However, for a Butt cap, the face is defined by a
straight line, and the computation of the position (relative to the center of
the arc) and the slope of the line only depends on the width and height of the
arc and the angle of the arc face. For other cap styles, the computation of the
position (relative to the center of the arc) and the shape of the cap only
depends on the width and height of the arc, the line-width, the angle of the
arc face, and the direction (clockwise or counter clockwise) of the arc from
the endpoint.

The join-style is applied the same as for two lines corresponding to the
tangents of the circles/ellipses at the join point. When the width and height
of both arcs are nonzero, and the angle of either arc face is not an integral
multiple of 90 degrees, then the shape of the join is implementation dependent.
However, the computation of the shape only depends on the width and height of
each arc, the line-width, the angles of the two arc faces, the direction
(clockwise or counter clockwise) of the arcs from the join point, and the
relative orientation of the two arc center points.

For an arc specified as [x,y,w,h,a1,a2], the angles must be specified in the
effectively skewed coordinate system of the ellipse (for a circle, the angles
and coordinate systems are identical). The relationship between these angles
and angles expressed in the normal coordinate system of the screen (as measured
with a protractor) is as follows:

        skewed-angle = atan(tan(normal-angle) * w/h) + adjust

The skewed-angle and normal-angle are expressed in radians (rather than in
degrees scaled by 64) in the range [0,2*PI). The atan returns a value in the
range [-PI/2,PI/2]. The adjust is:

0    for normal-angle in the range [0,PI/2)
PI   for normal-angle in the range [PI/2,(3*PI)/2)
2*PI for normal-angle in the range [(3*PI)/2,2*PI)

The arcs are drawn in the order listed. If the last point in one arc coincides
with the first point in the following arc, the two arcs will join correctly. If
the first point in the first arc coincides with the last point in the last arc,
the two arcs will join correctly. For any given arc, no pixel is drawn more
than once. If two arcs join correctly and the line-width is greater than zero
and the arcs intersect, no pixel is drawn more than once. Otherwise, the
intersecting pixels of intersecting arcs are drawn multiple times. Specifying
an arc with one endpoint and a clockwise extent draws the same pixels as
specifying the other endpoint and an equivalent counterclockwise extent, except
as it affects joins.

By specifying one axis to be zero, a horizontal or vertical line can be drawn.

Angles are computed based solely on the coordinate system, ignoring the aspect
ratio.

GC components: function, plane-mask, line-width, line-style, cap-style,
join-style, fill-style, subwindow-mode, clip-x-origin, clip-y-origin, clip-mask

GC mode-dependent components: foreground, background, tile, stipple,
tile-stipple-x-origin, tile-stipple-y-origin, dash-offset, dashes

FillPoly

drawable: DRAWABLE
gc: GCONTEXT
shape: { Complex, Nonconvex, Convex}
coordinate-mode: { Origin, Previous}
points: LISTofPOINT
Errors: Drawable, GContext, Match, Value

This request fills the region closed by the specified path. The path is closed
automatically if the last point in the list does not coincide with the first
point. No pixel of the region is drawn more than once.

The first point is always relative to the drawable's origin. The rest are
relative either to that origin or the previous point, depending on the
coordinate-mode.

The shape parameter may be used by the server to improve performance. Complex
means the path may self-intersect. Contiguous coincident points in the path are
not treated as self-intersection.

Nonconvex means the path does not self-intersect, but the shape is not wholly
convex. If known by the client, specifying Nonconvex over Complex may improve
performance. If Nonconvex is specified for a self-intersecting path, the
graphics results are undefined.

Convex means that for every pair of points inside the polygon, the line segment
connecting them does not intersect the path. If known by the client, specifying
Convex can improve performance. If Convex is specified for a path that is not
convex, the graphics results are undefined.

GC components: function, plane-mask, fill-style, fill-rule, subwindow-mode,
clip-x-origin, clip-y-origin, clip-mask

GC mode-dependent components: foreground, background, tile, stipple,
tile-stipple-x-origin, tile-stipple-y-origin

PolyFillRectangle

drawable: DRAWABLE
gc: GCONTEXT
rectangles: LISTofRECTANGLE
Errors: Drawable, GContext, Match

This request fills the specified rectangles, as if a four-point FillPoly were
specified for each rectangle:

        [x,y] [x+width,y] [x+width,y+height] [x,y+height]

The x and y coordinates of each rectangle are relative to the drawable's origin
and define the upper-left corner of the rectangle.

The rectangles are drawn in the order listed. For any given rectangle, no pixel
is drawn more than once. If rectangles intersect, the intersecting pixels are
drawn multiple times.

GC components: function, plane-mask, fill-style, subwindow-mode, clip-x-origin,
clip-y-origin, clip-mask

GC mode-dependent components: foreground, background, tile, stipple,
tile-stipple-x-origin, tile-stipple-y-origin

PolyFillArc

drawable: DRAWABLE
gc: GCONTEXT
arcs: LISTofARC
Errors: Drawable, GContext, Match

For each arc, this request fills the region closed by the infinitely thin path
described by the specified arc and one or two line segments, depending on the
arc-mode. For Chord, the single line segment joining the endpoints of the arc
is used. For PieSlice, the two line segments joining the endpoints of the arc
with the center point are used.

For an arc specified as [x,y,w,h,a1,a2], the origin of the major and minor axes
is at [x+(w/2),y+(h/2)], and the infinitely thin path describing the entire
circle/ellipse intersects the horizontal axis at [x,y+(h/2)] and [x+w,y+(h/2)]
and intersects the vertical axis at [x+(w/2),y] and [x+(w/2),y+h]. These
coordinates are not necessarily integral; that is, they are not truncated to
discrete coordinates.

The arc angles are interpreted as specified in the PolyArc request. When the
angle of an arc face is not an integral multiple of 90 degrees, then the
precise endpoint on the arc is implementation dependent. However, for Chord
arc-mode, the computation of the pair of endpoints (relative to the center of
the arc) only depends on the width and height of the arc and the angles of the
two arc faces. For PieSlice arc-mode, the computation of an endpoint only
depends on the angle of the arc face for that endpoint and the ratio of the arc
width to arc height.

The arcs are filled in the order listed. For any given arc, no pixel is drawn
more than once. If regions intersect, the intersecting pixels are drawn
multiple times.

GC components: function, plane-mask, fill-style, arc-mode, subwindow-mode,
clip-x-origin, clip-y-origin, clip-mask

GC mode-dependent components: foreground, background, tile, stipple,
tile-stipple-x-origin, tile-stipple-y-origin

PutImage

drawable: DRAWABLE
gc: GCONTEXT
depth: CARD8
width, height: CARD16
dst-x, dst-y: INT16
left-pad: CARD8
format: { Bitmap, XYPixmap, ZPixmap}
data: LISTofBYTE
Errors: Drawable, GContext, Match, Value

This request combines an image with a rectangle of the drawable. The dst-x and
dst-y coordinates are relative to the drawable's origin.

If Bitmap format is used, then depth must be one (or a Match error results),
and the image must be in XY format. The foreground pixel in gc defines the
source for bits set to 1 in the image, and the background pixel defines the
source for the bits set to 0.

For XYPixmap and ZPixmap, the depth must match the depth of the drawable (or a 
Match error results). For XYPixmap, the image must be sent in XY format. For 
ZPixmap, the image must be sent in the Z format defined for the given depth.

The left-pad must be zero for ZPixmap format (or a Match error results). For 
Bitmap and XYPixmap format, left-pad must be less than bitmap-scanline-pad as
given in the server connection setup information (or a Match error results).
The first left-pad bits in every scanline are to be ignored by the server. The
actual image begins that many bits into the data. The width argument defines
the width of the actual image and does not include left-pad.

GC components: function, plane-mask, subwindow-mode, clip-x-origin,
clip-y-origin, clip-mask

GC mode-dependent components: foreground, background

GetImage

drawable: DRAWABLE
x, y: INT16
width, height: CARD16
plane-mask: CARD32
format: { XYPixmap, ZPixmap}
▶
depth: CARD8
visual: VISUALID or None
data: LISTofBYTE
Errors: Drawable, Match, Value

This request returns the contents of the given rectangle of the drawable in the
given format. The x and y coordinates are relative to the drawable's origin and
define the upper-left corner of the rectangle. If XYPixmap is specified, only
the bit planes specified in plane-mask are transmitted, with the planes
appearing from most significant to least significant in bit order. If ZPixmap
is specified, then bits in all planes not specified in plane-mask are
transmitted as zero. Range checking is not performed on plane-mask; extraneous
bits are simply ignored. The returned depth is as specified when the drawable
was created and is the same as a depth component in a FORMAT structure (in the
connection setup), not a bits-per-pixel component. If the drawable is a window,
its visual type is returned. If the drawable is a pixmap, the visual is None.

If the drawable is a pixmap, then the given rectangle must be wholly contained
within the pixmap (or a Match error results). If the drawable is a window, the
window must be viewable, and it must be the case that, if there were no
inferiors or overlapping windows, the specified rectangle of the window would
be fully visible on the screen and wholly contained within the outside edges of
the window (or a Match error results). Note that the borders of the window can
be included and read with this request. If the window has a backing store, then
the backing-store contents are returned for regions of the window that are
obscured by noninferior windows; otherwise, the returned contents of such
obscured regions are undefined. Also undefined are the returned contents of
visible regions of inferiors of different depth than the specified window. The
pointer cursor image is not included in the contents returned.

This request is not general-purpose in the same sense as other graphics-related
requests. It is intended specifically for rudimentary hardcopy support.

PolyText8

drawable: DRAWABLE
gc: GCONTEXT
x, y: INT16
items: LISTofTEXTITEM8
where:               
       TEXTITEM8:   TEXTELT8 or FONT
       TEXTELT8:    [delta: INT8
                    string: STRING8]
Errors: Drawable, Font, GContext, Match

The x and y coordinates are relative to the drawable's origin and specify the
baseline starting position (the initial character origin). Each text item is
processed in turn. A font item causes the font to be stored in gc and to be
used for subsequent text. Switching among fonts does not affect the next
character origin. A text element delta specifies an additional change in the
position along the x axis before the string is drawn; the delta is always added
to the character origin. Each character image, as defined by the font in gc, is
treated as an additional mask for a fill operation on the drawable.

All contained FONTs are always transmitted most significant byte first.

If a Font error is generated for an item, the previous items may have been
drawn.

For fonts defined with 2-byte matrix indexing, each STRING8 byte is interpreted
as a byte2 value of a CHAR2B with a byte1 value of zero.

GC components: function, plane-mask, fill-style, font, subwindow-mode,
clip-x-origin, clip-y-origin, clip-mask

GC mode-dependent components: foreground, background, tile, stipple,
tile-stipple-x-origin, tile-stipple-y-origin

PolyText16

drawable: DRAWABLE
gc: GCONTEXT
x, y: INT16
items: LISTofTEXTITEM16
where:               
       TEXTITEM16:  TEXTELT16 or FONT
       TEXTELT16:   [delta: INT8
                    string: STRING16]
Errors: Drawable, Font, GContext, Match

This request is similar to PolyText8, except 2-byte (or 16-bit) characters are
used. For fonts defined with linear indexing rather than 2-byte matrix
indexing, the server will interpret each CHAR2B as a 16-bit number that has
been transmitted most significant byte first (that is, byte1 of the CHAR2B is
taken as the most significant byte).

ImageText8

drawable: DRAWABLE
gc: GCONTEXT
x, y: INT16
string: STRING8
Errors: Drawable, GContext, Match

The x and y coordinates are relative to the drawable's origin and specify the
baseline starting position (the initial character origin). The effect is first
to fill a destination rectangle with the background pixel defined in gc and
then to paint the text with the foreground pixel. The upper-left corner of the
filled rectangle is at:

        [x, y - font-ascent]

the width is:

        overall-width

and the height is:

        font-ascent + font-descent

The overall-width, font-ascent, and font-descent are as they would be returned
by a QueryTextExtents call using gc and string.

The function and fill-style defined in gc are ignored for this request. The
effective function is Copy, and the effective fill-style Solid.

For fonts defined with 2-byte matrix indexing, each STRING8 byte is interpreted
as a byte2 value of a CHAR2B with a byte1 value of zero.

GC components: plane-mask, foreground, background, font, subwindow-mode,
clip-x-origin, clip-y-origin, clip-mask

ImageText16

drawable: DRAWABLE
gc: GCONTEXT
x, y: INT16
string: STRING16
Errors: Drawable, GContext, Match

This request is similar to ImageText8, except 2-byte (or 16-bit) characters are
used. For fonts defined with linear indexing rather than 2-byte matrix
indexing, the server will interpret each CHAR2B as a 16-bit number that has
been transmitted most significant byte first (that is, byte1 of the CHAR2B is
taken as the most significant byte).

CreateColormap

mid: COLORMAP
visual: VISUALID
window: WINDOW
alloc: { None, All}
Errors: Alloc, IDChoice, Match, Value, Window

This request creates a colormap of the specified visual type for the screen on
which the window resides and associates the identifier mid with it. The visual
type must be one supported by the screen (or a Match error results). The
initial values of the colormap entries are undefined for classes GrayScale, 
PseudoColor, and DirectColor. For StaticGray, StaticColor, and TrueColor, the
entries will have defined values, but those values are specific to the visual
and are not defined by the core protocol. For StaticGray, StaticColor, and 
TrueColor, alloc must be specified as None (or a Match error results). For the
other classes, if alloc is None, the colormap initially has no allocated
entries, and clients can allocate entries.

If alloc is All, then the entire colormap is allocated writable. The initial
values of all allocated entries are undefined. For GrayScale and PseudoColor,
the effect is as if an AllocColorCells request returned all pixel values from
zero to N - 1, where N is the colormap-entries value in the specified visual.
For DirectColor, the effect is as if an AllocColorPlanes request returned a
pixel value of zero and red-mask, green-mask, and blue-mask values containing
the same bits as the corresponding masks in the specified visual. However, in
all cases, none of these entries can be freed with FreeColors.

FreeColormap

cmap: COLORMAP
Errors: Colormap

This request deletes the association between the resource ID and the colormap
and frees the colormap storage. If the colormap is an installed map for a
screen, it is uninstalled (see UninstallColormap request). If the colormap is
defined as the colormap for a window (by means of CreateWindow or
ChangeWindowAttributes), the colormap for the window is changed to None, and a
ColormapNotify event is generated. The protocol does not define the colors
displayed for a window with a colormap of None.

This request has no effect on a default colormap for a screen.

CopyColormapAndFree

mid, src-cmap: COLORMAP
Errors: Alloc, Colormap, IDChoice

This request creates a colormap of the same visual type and for the same screen
as src-cmap, and it associates identifier mid with it. It also moves all of the
client's existing allocations from src-cmap to the new colormap with their
color values intact and their read-only or writable characteristics intact, and
it frees those entries in src-cmap. Color values in other entries in the new
colormap are undefined. If src-cmap was created by the client with alloc All
(see CreateColormap request), then the new colormap is also created with alloc 
All, all color values for all entries are copied from src-cmap, and then all
entries in src-cmap are freed. If src-cmap was not created by the client with
alloc All, then the allocations to be moved are all those pixels and planes
that have been allocated by the client using either AllocColor, AllocNamedColor
, AllocColorCells, or AllocColorPlanes and that have not been freed since they
were allocated.

InstallColormap

cmap: COLORMAP
Errors: Colormap

This request makes this colormap an installed map for its screen. All windows
associated with this colormap immediately display with true colors. As a side
effect, additional colormaps might be implicitly installed or uninstalled by
the server. Which other colormaps get installed or uninstalled is
server-dependent except that the required list must remain installed.

If cmap is not already an installed map, a ColormapNotify event is generated on
every window having cmap as an attribute. In addition, for every other colormap
that is installed or uninstalled as a result of the request, a ColormapNotify
event is generated on every window having that colormap as an attribute.

At any time, there is a subset of the installed maps that are viewed as an
ordered list and are called the required list. The length of the required list
is at most M, where M is the min-installed-maps specified for the screen in the
connection setup. The required list is maintained as follows. When a colormap
is an explicit argument to InstallColormap, it is added to the head of the
list; the list is truncated at the tail, if necessary, to keep the length of
the list to at most M. When a colormap is an explicit argument to
UninstallColormap and it is in the required list, it is removed from the list.
A colormap is not added to the required list when it is installed implicitly by
the server, and the server cannot implicitly uninstall a colormap that is in
the required list.

Initially the default colormap for a screen is installed (but is not in the
required list).

UninstallColormap

cmap: COLORMAP
Errors: Colormap

If cmap is on the required list for its screen (see InstallColormap request),
it is removed from the list. As a side effect, cmap might be uninstalled, and
additional colormaps might be implicitly installed or uninstalled. Which
colormaps get installed or uninstalled is server-dependent except that the
required list must remain installed.

If cmap becomes uninstalled, a ColormapNotify event is generated on every
window having cmap as an attribute. In addition, for every other colormap that
is installed or uninstalled as a result of the request, a ColormapNotify event
is generated on every window having that colormap as an attribute.

ListInstalledColormaps

window: WINDOW
▶
cmaps: LISTofCOLORMAP
Errors: Window

This request returns a list of the currently installed colormaps for the screen
of the specified window. The order of colormaps is not significant, and there
is no explicit indication of the required list (see InstallColormap request).

AllocColor

cmap: COLORMAP
red, green, blue: CARD16
▶
pixel: CARD32
red, green, blue: CARD16
Errors: Alloc, Colormap

This request allocates a read-only colormap entry corresponding to the closest
RGB values provided by the hardware. It also returns the pixel and the RGB
values actually used. Multiple clients requesting the same effective RGB values
can be assigned the same read-only entry, allowing entries to be shared.

AllocNamedColor

cmap: COLORMAP
name: STRING8
▶
pixel: CARD32
exact-red, exact-green, exact-blue: CARD16
visual-red, visual-green, visual-blue: CARD16
Errors: Alloc, Colormap, Name

This request looks up the named color with respect to the screen associated
with the colormap. Then, it does an AllocColor on cmap. The name should use the
ISO Latin-1 encoding, and uppercase and lowercase do not matter. The exact RGB
values specify the true values for the color, and the visual values specify the
values actually used in the colormap.

AllocColorCells

cmap: COLORMAP
colors, planes: CARD16
contiguous: BOOL
▶
pixels, masks: LISTofCARD32
Errors: Alloc, Colormap, Value

The number of colors must be positive, and the number of planes must be
nonnegative (or a Value error results). If C colors and P planes are requested,
then C pixels and P masks are returned. No mask will have any bits in common
with any other mask or with any of the pixels. By ORing together masks and
pixels, C*%2 sup P% distinct pixels can be produced; all of these are allocated
writable by the request. For GrayScale or PseudoColor, each mask will have
exactly one bit set to 1; for DirectColor, each will have exactly three bits
set to 1. If contiguous is True and if all masks are ORed together, a single
contiguous set of bits will be formed for GrayScale or PseudoColor, and three
contiguous sets of bits (one within each pixel subfield) for DirectColor. The
RGB values of the allocated entries are undefined.

AllocColorPlanes

cmap: COLORMAP
colors, reds, greens, blues: CARD16
contiguous: BOOL
▶
pixels: LISTofCARD32
red-mask, green-mask, blue-mask: CARD32
Errors: Alloc, Colormap, Value

The number of colors must be positive, and the reds, greens, and blues must be
nonnegative (or a Value error results). If C colors, R reds, G greens, and B
blues are requested, then C pixels are returned, and the masks have R, G, and B
bits set, respectively. If contiguous is True, then each mask will have a
contiguous set of bits. No mask will have any bits in common with any other
mask or with any of the pixels. For DirectColor, each mask will lie within the
corresponding pixel subfield. By ORing together subsets of masks with pixels,
C*%2 sup R+G+B% distinct pixels can be produced; all of these are allocated
writable by the request. The initial RGB values of the allocated entries are
undefined. In the colormap, there are only C*%2 sup R% independent red entries,
C*%2 sup G% independent green entries, and C*%2 sup B% independent blue
entries. This is true even for PseudoColor. When the colormap entry for a pixel
value is changed using StoreColors or StoreNamedColor, the pixel is decomposed
according to the masks and the corresponding independent entries are updated.

FreeColors

cmap: COLORMAP
pixels: LISTofCARD32
plane-mask: CARD32
Errors: Access, Colormap, Value

The plane-mask should not have any bits in common with any of the pixels. The
set of all pixels is produced by ORing together subsets of plane-mask with the
pixels. The request frees all of these pixels that were allocated by the client
(using AllocColor, AllocNamedColor, AllocColorCells, and AllocColorPlanes).
Note that freeing an individual pixel obtained from AllocColorPlanes may not
actually allow it to be reused until all of its related pixels are also freed.
Similarly, a read-only entry is not actually freed until it has been freed by
all clients, and if a client allocates the same read-only entry multiple times,
it must free the entry that many times before the entry is actually freed.

All specified pixels that are allocated by the client in cmap are freed, even
if one or more pixels produce an error. A Value error is generated if a
specified pixel is not a valid index into cmap. An Access error is generated if
a specified pixel is not allocated by the client (that is, is unallocated or is
only allocated by another client) or if the colormap was created with all
entries writable (using an alloc value of All in CreateColormap). If more than
one pixel is in error, it is arbitrary as to which pixel is reported.

StoreColors

cmap: COLORMAP
items: LISTofCOLORITEM
where:
COLORITEM: [pixel: CARD32
           do-red, do-green, do-blue: BOOL
           red, green, blue: CARD16]

Errors: Access, Colormap, Value

This request changes the colormap entries of the specified pixels. The do-red,
do-green, and do-blue fields indicate which components should actually be
changed. If the colormap is an installed map for its screen, the changes are
visible immediately.

All specified pixels that are allocated writable in cmap (by any client) are
changed, even if one or more pixels produce an error. A Value error is
generated if a specified pixel is not a valid index into cmap, and an Access
error is generated if a specified pixel is unallocated or is allocated
read-only. If more than one pixel is in error, it is arbitrary as to which
pixel is reported.

StoreNamedColor

cmap: COLORMAP
pixel: CARD32
name: STRING8
do-red, do-green, do-blue: BOOL
Errors: Access, Colormap, Name, Value

This request looks up the named color with respect to the screen associated
with cmap and then does a StoreColors in cmap. The name should use the ISO
Latin-1 encoding, and uppercase and lowercase do not matter. The Access and 
Value errors are the same as in StoreColors.

QueryColors

cmap: COLORMAP
pixels: LISTofCARD32
▶
colors: LISTofRGB
where:
RGB: [red, green, blue: CARD16]
Errors: Colormap, Value

This request returns the hardware-specific color values stored in cmap for the
specified pixels. The values returned for an unallocated entry are undefined. A
Value error is generated if a pixel is not a valid index into cmap. If more
than one pixel is in error, it is arbitrary as to which pixel is reported.

LookupColor

cmap: COLORMAP
name: STRING8
▶
exact-red, exact-green, exact-blue: CARD16
visual-red, visual-green, visual-blue: CARD16
Errors: Colormap, Name

This request looks up the string name of a color with respect to the screen
associated with cmap and returns both the exact color values and the closest
values provided by the hardware with respect to the visual type of cmap. The
name should use the ISO Latin-1 encoding, and uppercase and lowercase do not
matter.

CreateCursor

cid: CURSOR
source: PIXMAP
mask: PIXMAP or None
fore-red, fore-green, fore-blue: CARD16
back-red, back-green, back-blue: CARD16
x, y: CARD16
Errors: Alloc, IDChoice, Match, Pixmap

This request creates a cursor and associates identifier cid with it. The
foreground and background RGB values must be specified, even if the server only
has a StaticGray or GrayScale screen. The foreground is used for the bits set
to 1 in the source, and the background is used for the bits set to 0. Both
source and mask (if specified) must have depth one (or a Match error results),
but they can have any root. The mask pixmap defines the shape of the cursor.
That is, the bits set to 1 in the mask define which source pixels will be
displayed, and where the mask has bits set to 0, the corresponding bits of the
source pixmap are ignored. If no mask is given, all pixels of the source are
displayed. The mask, if present, must be the same size as the source (or a 
Match error results). The x and y coordinates define the hotspot relative to
the source's origin and must be a point within the source (or a Match error
results).

The components of the cursor may be transformed arbitrarily to meet display
limitations.

The pixmaps can be freed immediately if no further explicit references to them
are to be made.

Subsequent drawing in the source or mask pixmap has an undefined effect on the
cursor. The server might or might not make a copy of the pixmap.

CreateGlyphCursor

cid: CURSOR
source-font: FONT
mask-font: FONT or None
source-char, mask-char: CARD16
fore-red, fore-green, fore-blue: CARD16
back-red, back-green, back-blue: CARD16
Errors: Alloc, Font, IDChoice, Value

This request is similar to CreateCursor, except the source and mask bitmaps are
obtained from the specified font glyphs. The source-char must be a defined
glyph in source-font, and if mask-font is given, mask-char must be a defined
glyph in mask-font (or a Value error results). The mask font and character are
optional. The origins of the source and mask (if it is defined) glyphs are
positioned coincidently and define the hotspot. The source and mask need not
have the same bounding box metrics, and there is no restriction on the
placement of the hotspot relative to the bounding boxes. If no mask is given,
all pixels of the source are displayed. Note that source-char and mask-char are
CARD16, not CHAR2B. For 2-byte matrix fonts, the 16-bit value should be formed
with byte1 in the most significant byte and byte2 in the least significant
byte.

The components of the cursor may be transformed arbitrarily to meet display
limitations.

The fonts can be freed immediately if no further explicit references to them
are to be made.

FreeCursor

cursor: CURSOR
Errors: Cursor

This request deletes the association between the resource ID and the cursor.
The cursor storage will be freed when no other resource references it.

RecolorCursor

cursor: CURSOR
fore-red, fore-green, fore-blue: CARD16
back-red, back-green, back-blue: CARD16
Errors: Cursor

This request changes the color of a cursor. If the cursor is being displayed on
a screen, the change is visible immediately.

QueryBestSize

class: { Cursor, Tile, Stipple}
drawable: DRAWABLE
width, height: CARD16
▶
width, height: CARD16
Errors: Drawable, Match, Value

This request returns the best size that is closest to the argument size. For 
Cursor, this is the largest size that can be fully displayed. For Tile, this is
the size that can be tiled fastest. For Stipple, this is the size that can be
stippled fastest.

For Cursor, the drawable indicates the desired screen. For Tile and Stipple,
the drawable indicates the screen and also possibly the window class and depth.
An InputOnly window cannot be used as the drawable for Tile or Stipple (or a 
Match error results).

QueryExtension

name: STRING8
▶
present: BOOL
major-opcode: CARD8
first-event: CARD8
first-error: CARD8

This request determines if the named extension is present. If so, the major
opcode for the extension is returned, if it has one. Otherwise, zero is
returned. Any minor opcode and the request formats are specific to the
extension. If the extension involves additional event types, the base event
type code is returned. Otherwise, zero is returned. The format of the events is
specific to the extension. If the extension involves additional error codes,
the base error code is returned. Otherwise, zero is returned. The format of
additional data in the errors is specific to the extension.

The extension name should use the ISO Latin-1 encoding, and uppercase and
lowercase matter.

ListExtensions

▶
names: LISTofSTRING8

This request returns a list of all extensions supported by the server.

SetModifierMapping

keycodes-per-modifier: CARD8
keycodes: LISTofKEYCODE
▶
status: { Success, Busy, Failed}
Errors: Alloc, Value

This request specifies the keycodes (if any) of the keys to be used as
modifiers. The number of keycodes in the list must be 8*keycodes-per-modifier
(or a Length error results). The keycodes are divided into eight sets, with
each set containing keycodes-per-modifier elements. The sets are assigned to
the modifiers Shift, Lock, Control, Mod1, Mod2, Mod3, Mod4, and Mod5, in order.
Only nonzero keycode values are used within each set; zero values are ignored.
All of the nonzero keycodes must be in the range specified by min-keycode and
max-keycode in the connection setup (or a Value error results). The order of
keycodes within a set does not matter. If no nonzero values are specified in a
set, the use of the corresponding modifier is disabled, and the modifier bit
will always be zero. Otherwise, the modifier bit will be one whenever at least
one of the keys in the corresponding set is in the down position.

A server can impose restrictions on how modifiers can be changed (for example,
if certain keys do not generate up transitions in hardware, if auto-repeat
cannot be disabled on certain keys, or if multiple keys per modifier are not
supported). The status reply is Failed if some such restriction is violated,
and none of the modifiers is changed.

If the new nonzero keycodes specified for a modifier differ from those
currently defined and any (current or new) keys for that modifier are logically
in the down state, then the status reply is Busy, and none of the modifiers is
changed.

This request generates a MappingNotify event on a Success status.

GetModifierMapping

▶
keycodes-per-modifier: CARD8
keycodes: LISTofKEYCODE

This request returns the keycodes of the keys being used as modifiers. The
number of keycodes in the list is 8*keycodes-per-modifier. The keycodes are
divided into eight sets, with each set containing keycodes-per-modifier
elements. The sets are assigned to the modifiers Shift, Lock, Control, Mod1, 
Mod2, Mod3, Mod4, and Mod5, in order. The keycodes-per-modifier value is chosen
arbitrarily by the server; zeroes are used to fill in unused elements within
each set. If only zero values are given in a set, the use of the corresponding
modifier has been disabled. The order of keycodes within each set is chosen
arbitrarily by the server.

ChangeKeyboardMapping

first-keycode: KEYCODE
keysyms-per-keycode: CARD8
keysyms: LISTofKEYSYM
Errors: Alloc, Value

This request defines the symbols for the specified number of keycodes, starting
with the specified keycode. The symbols for keycodes outside this range
remained unchanged. The number of elements in the keysyms list must be a
multiple of keysyms-per-keycode (or a Length error results). The first-keycode
must be greater than or equal to min-keycode as returned in the connection
setup (or a Value error results) and:

        first-keycode + (keysyms-length / keysyms-per-keycode) - 1

must be less than or equal to max-keycode as returned in the connection setup
(or a Value error results). KEYSYM number N (counting from zero) for keycode K
has an index (counting from zero) of:

        (K - first-keycode) * keysyms-per-keycode + N

in keysyms. The keysyms-per-keycode can be chosen arbitrarily by the client to
be large enough to hold all desired symbols. A special KEYSYM value of NoSymbol
should be used to fill in unused elements for individual keycodes. It is legal
for NoSymbol to appear in nontrailing positions of the effective list for a
keycode.

This request generates a MappingNotify event.

There is no requirement that the server interpret this mapping; it is merely
stored for reading and writing by clients (see section 5).

GetKeyboardMapping

first-keycode: KEYCODE
count: CARD8
▶
keysyms-per-keycode: CARD8
keysyms: LISTofKEYSYM
Errors: Value

This request returns the symbols for the specified number of keycodes, starting
with the specified keycode. The first-keycode must be greater than or equal to
min-keycode as returned in the connection setup (or a Value error results),
and:

        first-keycode + count - 1

must be less than or equal to max-keycode as returned in the connection setup
(or a Value error results). The number of elements in the keysyms list is:

        count * keysyms-per-keycode

and KEYSYM number N (counting from zero) for keycode K has an index (counting
from zero) of:

        (K - first-keycode) * keysyms-per-keycode + N

in keysyms. The keysyms-per-keycode value is chosen arbitrarily by the server
to be large enough to report all requested symbols. A special KEYSYM value of 
NoSymbol is used to fill in unused elements for individual keycodes.

ChangeKeyboardControl

value-mask: BITMASK
value-list: LISTofVALUE
Errors: Match, Value

This request controls various aspects of the keyboard. The value-mask and
value-list specify which controls are to be changed. The possible values are:

┌─────────────────┬────────────────────┐
│Control          │Type                │
├─────────────────┼────────────────────┤
│key-click-percent│INT8                │
├─────────────────┼────────────────────┤
│bell-percent     │INT8                │
├─────────────────┼────────────────────┤
│bell-pitch       │INT16               │
├─────────────────┼────────────────────┤
│bell-duration    │INT16               │
├─────────────────┼────────────────────┤
│led              │CARD8               │
├─────────────────┼────────────────────┤
│led-mode         │{ On, Off }         │
├─────────────────┼────────────────────┤
│key              │KEYCODE             │
├─────────────────┼────────────────────┤
│auto-repeat-mode │{ On, Off, Default }│
└─────────────────┴────────────────────┘

The key-click-percent sets the volume for key clicks between 0 (off) and 100
(loud) inclusive, if possible. Setting to -1 restores the default. Other
negative values generate a Value error.

The bell-percent sets the base volume for the bell between 0 (off) and 100
(loud) inclusive, if possible. Setting to -1 restores the default. Other
negative values generate a Value error.

The bell-pitch sets the pitch (specified in Hz) of the bell, if possible.
Setting to -1 restores the default. Other negative values generate a Value
error.

The bell-duration sets the duration of the bell (specified in milliseconds), if
possible. Setting to -1 restores the default. Other negative values generate a 
Value error.

If both led-mode and led are specified, then the state of that LED is changed,
if possible. If only led-mode is specified, then the state of all LEDs are
changed, if possible. At most 32 LEDs, numbered from one, are supported. No
standard interpretation of LEDs is defined. It is a Match error if an led is
specified without an led-mode.

If both auto-repeat-mode and key are specified, then the auto-repeat mode of
that key is changed, if possible. If only auto-repeat-mode is specified, then
the global auto-repeat mode for the entire keyboard is changed, if possible,
without affecting the per-key settings. It is a Match error if a key is
specified without an auto-repeat-mode. Each key has an individual mode of
whether or not it should auto-repeat and a default setting for that mode. In
addition, there is a global mode of whether auto-repeat should be enabled or
not and a default setting for that mode. When the global mode is On, keys
should obey their individual auto-repeat modes. When the global mode is Off, no
keys should auto-repeat. An auto-repeating key generates alternating KeyPress
and KeyRelease events. When a key is used as a modifier, it is desirable for
the key not to auto-repeat, regardless of the auto-repeat setting for that key.

A bell generator connected with the console but not directly on the keyboard is
treated as if it were part of the keyboard.

The order in which controls are verified and altered is server-dependent. If an
error is generated, a subset of the controls may have been altered.

GetKeyboardControl

▶
key-click-percent: CARD8
bell-percent: CARD8
bell-pitch: CARD16
bell-duration: CARD16
led-mask: CARD32
global-auto-repeat: { On, Off}
auto-repeats: LISTofCARD8

This request returns the current control values for the keyboard. For the LEDs,
the least significant bit of led-mask corresponds to LED one, and each one bit
in led-mask indicates an LED that is lit. The auto-repeats is a bit vector;
each one bit indicates that auto-repeat is enabled for the corresponding key.
The vector is represented as 32 bytes. Byte N (from 0) contains the bits for
keys 8N to 8N + 7, with the least significant bit in the byte representing key
8N.

Bell

percent: INT8
Errors: Value

This request rings the bell on the keyboard at a volume relative to the base
volume for the keyboard, if possible. Percent can range from -100 to 100
inclusive (or a Value error results). The volume at which the bell is rung when
percent is nonnegative is:

        base - [(base * percent) / 100] + percent

When percent is negative, it is:

        base + [(base * percent) / 100]

SetPointerMapping

map: LISTofCARD8
▶
status: { Success, Busy}
Errors: Value

This request sets the mapping of the pointer. Elements of the list are indexed
starting from one. The length of the list must be the same as GetPointerMapping
would return (or a Value error results). The index is a core button number, and
the element of the list defines the effective number.

A zero element disables a button. Elements are not restricted in value by the
number of physical buttons, but no two elements can have the same nonzero value
(or a Value error results).

If any of the buttons to be altered are logically in the down state, the status
reply is Busy, and the mapping is not changed.

This request generates a MappingNotify event on a Success status.

GetPointerMapping

▶
map: LISTofCARD8

This request returns the current mapping of the pointer. Elements of the list
are indexed starting from one. The length of the list indicates the number of
physical buttons.

The nominal mapping for a pointer is the identity mapping: map[i]=i.

ChangePointerControl

do-acceleration, do-threshold: BOOL
acceleration-numerator, acceleration-denominator: INT16
threshold: INT16
Errors: Value

This request defines how the pointer moves. The acceleration is a multiplier
for movement expressed as a fraction. For example, specifying 3/1 means the
pointer moves three times as fast as normal. The fraction can be rounded
arbitrarily by the server. Acceleration only takes effect if the pointer moves
more than threshold number of pixels at once and only applies to the amount
beyond the threshold. Setting a value to -1 restores the default. Other
negative values generate a Value error, as does a zero value for
acceleration-denominator.

GetPointerControl

▶
acceleration-numerator, acceleration-denominator: CARD16
threshold: CARD16

This request returns the current acceleration and threshold for the pointer.

SetScreenSaver

timeout, interval: INT16
prefer-blanking: { Yes, No, Default}
allow-exposures: { Yes, No, Default}
Errors: Value

The timeout and interval are specified in seconds; setting a value to -1
restores the default. Other negative values generate a Value error. If the
timeout value is zero, screen-saver is disabled (but an activated screen-saver
is not deactivated). If the timeout value is nonzero, screen-saver is enabled.
Once screen-saver is enabled, if no input from the keyboard or pointer is
generated for timeout seconds, screen-saver is activated. For each screen, if
blanking is preferred and the hardware supports video blanking, the screen will
simply go blank. Otherwise, if either exposures are allowed or the screen can
be regenerated without sending exposure events to clients, the screen is
changed in a server-dependent fashion to avoid phosphor burn. Otherwise, the
state of the screens does not change, and screen-saver is not activated. At the
next keyboard or pointer input or at the next ForceScreenSaver with mode Reset,
screen-saver is deactivated, and all screen states are restored.

If the server-dependent screen-saver method is amenable to periodic change,
interval serves as a hint about how long the change period should be, with zero
hinting that no periodic change should be made. Examples of ways to change the
screen include scrambling the color map periodically, moving an icon image
about the screen periodically, or tiling the screen with the root window
background tile, randomly reorigined periodically.

GetScreenSaver

▶
timeout, interval: CARD16
prefer-blanking: { Yes, No}
allow-exposures: { Yes, No}

This request returns the current screen-saver control values.

ForceScreenSaver

mode: { Activate, Reset}
Errors: Value

If the mode is Activate and screen-saver is currently deactivated, then
screen-saver is activated (even if screen-saver has been disabled with a
timeout value of zero). If the mode is Reset and screen-saver is currently
enabled, then screen-saver is deactivated (if it was activated), and the
activation timer is reset to its initial state as if device input had just been
received.

ChangeHosts

mode: { Insert, Delete}
host: HOST
Errors: Access, Value

This request adds or removes the specified host from the access control list. 
When the access control mechanism is enabled and a client attempts to establish
a connection to the server, the host on which the client resides must be in the
access control list, or the client must have been granted permission by a
server-dependent method, or the server will refuse the connection.

The client must reside on the same host as the server and/or have been granted
permission by a server-dependent method to execute this request (or an Access
error results).

An initial access control list can usually be specified, typically by naming a
file that the server reads at startup and reset.

The following address families are defined. A server is not required to support
these families and may support families not listed here. Use of an unsupported
family, an improper address format, or an improper address length within a
supported family results in a Value error.

For the Internet family, the address must be four bytes long. The address bytes
are in standard IP order; the server performs no automatic swapping on the
address bytes. The Internet family supports IP version 4 addresses only.

For the InternetV6 family, the address must be sixteen bytes long. The address
bytes are in standard IP order; the server performs no automatic swapping on
the address bytes. The InternetV6 family supports IP version 6 addresses only.

For the DECnet family, the server performs no automatic swapping on the address
bytes. A Phase IV address is two bytes long: the first byte contains the least
significant eight bits of the node number, and the second byte contains the
most significant two bits of the node number in the least significant two bits
of the byte and the area in the most significant six bits of the byte.

For the Chaos family, the address must be two bytes long. The host number is
always the first byte in the address, and the subnet number is always the
second byte. The server performs no automatic swapping on the address bytes.

For the ServerInterpreted family, the address may be of any length up to 65535
bytes. The address consists of two strings of ASCII characters, separated by a
byte with a value of 0. The first string represents the type of address, and
the second string contains the address value. Address types and the syntax for
their associated values will be registered via the X.Org Registry. Implementors
who wish to add implementation specific types may register a unique prefix with
the X.Org registry to prevent namespace collisions.

Use of a host address in the ChangeHosts request is deprecated. It is only
useful when a host has a unique, constant address, a requirement that is
increasingly unmet as sites adopt dynamically assigned addresses, network
address translation gateways, IPv6 link local addresses, and various other
technologies. It also assumes all users of a host share equivalent access
rights, and as such has never been suitable for many multi-user machine
environments. Instead, more secure forms of authentication, such as those based
on shared secrets or public key encryption, are recommended.

ListHosts

▶
mode: { Enabled, Disabled}
hosts: LISTofHOST

This request returns the hosts on the access control list and whether use of
the list at connection setup is currently enabled or disabled.

Each HOST is padded to a multiple of four bytes.

SetAccessControl

mode: { Enable, Disable}
Errors: Access, Value

This request enables or disables the use of the access control list at
connection setups.

The client must reside on the same host as the server and/or have been granted
permission by a server-dependent method to execute this request (or an Access
error results).

SetCloseDownMode

mode: { Destroy, RetainPermanent, RetainTemporary}
Errors: Value

This request defines what will happen to the client's resources at connection
close. A connection starts in Destroy mode. The meaning of the close-down mode
is described in section 10.

KillClient

resource: CARD32 or AllTemporary
Errors: Value

If a valid resource is specified, KillClient forces a close-down of the client
that created the resource. If the client has already terminated in either 
RetainPermanent or RetainTemporary mode, all of the client's resources are
destroyed (see section 10). If AllTemporary is specified, then the resources of
all clients that have terminated in RetainTemporary are destroyed.

NoOperation

This request has no arguments and no results, but the request length field
allows the request to be any multiple of four bytes in length. The bytes
contained in the request are uninterpreted by the server.

This request can be used in its minimum four byte form as padding where
necessary by client libraries that find it convenient to force requests to
begin on 64-bit boundaries.

Chapter 10. Connection Close

At connection close, all event selections made by the client are discarded. If
the client has the pointer actively grabbed, an UngrabPointer is performed. If
the client has the keyboard actively grabbed, an UngrabKeyboard is performed.
All passive grabs by the client are released. If the client has the server
grabbed, an UngrabServer is performed. All selections (see SetSelectionOwner
request) owned by the client are disowned. If close-down mode (see
SetCloseDownMode request) is RetainPermanent or RetainTemporary, then all
resources (including colormap entries) allocated by the client are marked as
permanent or temporary, respectively (but this does not prevent other clients
from explicitly destroying them). If the mode is Destroy, all of the client's
resources are destroyed.

When a client's resources are destroyed, for each window in the client's
save-set, if the window is an inferior of a window created by the client, the
save-set window is reparented to the closest ancestor such that the save-set
window is not an inferior of a window created by the client. If the save-set
window is unmapped, a MapWindow request is performed on it (even if it was not
an inferior of a window created by the client). The reparenting leaves
unchanged the absolute coordinates (with respect to the root window) of the
upper-left outer corner of the save-set window. After save-set processing, all
windows created by the client are destroyed. For each nonwindow resource
created by the client, the appropriate Free request is performed. All colors
and colormap entries allocated by the client are freed.

A server goes through a cycle of having no connections and having some
connections. At every transition to the state of having no connections as a
result of a connection closing with a Destroy close-down mode, the server
resets its state as if it had just been started. This starts by destroying all
lingering resources from clients that have terminated in RetainPermanent or 
RetainTemporary mode. It additionally includes deleting all but the predefined
atom identifiers, deleting all properties on all root windows, resetting all
device maps and attributes (key click, bell volume, acceleration), resetting
the access control list, restoring the standard root tiles and cursors,
restoring the default font path, and restoring the input focus to state 
PointerRoot.

Note that closing a connection with a close-down mode of RetainPermanent or 
RetainTemporary will not cause the server to reset.

Chapter 11. Events

Table of Contents

Input Device events
Pointer Window events
Input Focus events
KeymapNotify
Expose
GraphicsExposure
NoExposure
VisibilityNotify
CreateNotify
DestroyNotify
UnmapNotify
MapNotify
MapRequest
ReparentNotify
ConfigureNotify
GravityNotify
ResizeRequest
ConfigureRequest
CirculateNotify
CirculateRequest
PropertyNotify
SelectionClear
SelectionRequest
SelectionNotify
ColormapNotify
MappingNotify
ClientMessage

When a button press is processed with the pointer in some window W and no
active pointer grab is in progress, the ancestors of W are searched from the
root down, looking for a passive grab to activate. If no matching passive grab
on the button exists, then an active grab is started automatically for the
client receiving the event, and the last-pointer-grab time is set to the
current server time. The effect is essentially equivalent to a GrabButton with
arguments:

┌────────────────────┬────────────────────────────────────────────────────────┐
│Argument            │Value                                                   │
├────────────────────┼────────────────────────────────────────────────────────┤
│event-window        │Event window                                            │
├────────────────────┼────────────────────────────────────────────────────────┤
│event-mask          │Client's selected pointer events on the event window    │
├────────────────────┼────────────────────────────────────────────────────────┤
│pointer-mode and    │Asynchronous                                            │
│keyboard-mode       │                                                        │
├────────────────────┼────────────────────────────────────────────────────────┤
│owner-events        │True if the client has OwnerGrabButton selected on the  │
│                    │event window, otherwise False                           │
├────────────────────┼────────────────────────────────────────────────────────┤
│confine-to          │None                                                    │
├────────────────────┼────────────────────────────────────────────────────────┤
│cursor              │None                                                    │
└────────────────────┴────────────────────────────────────────────────────────┘

The grab is terminated automatically when the logical state of the pointer has
all buttons released. UngrabPointer and ChangeActivePointerGrab can both be
used to modify the active grab.

Input Device events

KeyPress
KeyRelease
ButtonPress
ButtonRelease
MotionNotify
root, event: WINDOW
child: WINDOW or None
same-screen: BOOL
root-x, root-y, event-x, event-y: INT16
detail: <see below>
state: SETofKEYBUTMASK
time: TIMESTAMP

These events are generated either when a key or button logically changes state
or when the pointer logically moves. The generation of these logical changes
may lag the physical changes if device event processing is frozen. Note that 
KeyPress and KeyRelease are generated for all keys, even those mapped to
modifier bits. The source of the event is the window the pointer is in. The
window the event is reported with respect to is called the event window. The
event window is found by starting with the source window and looking up the
hierarchy for the first window on which any client has selected interest in the
event (provided no intervening window prohibits event generation by including
the event type in its do-not-propagate-mask). The actual window used for
reporting can be modified by active grabs and, in the case of keyboard events,
can be modified by the focus window.

The root is the root window of the source window, and root-x and root-y are the
pointer coordinates relative to root's origin at the time of the event. Event
is the event window. If the event window is on the same screen as root, then
event-x and event-y are the pointer coordinates relative to the event window's
origin. Otherwise, event-x and event-y are zero. If the source window is an
inferior of the event window, then child is set to the child of the event
window that is an ancestor of (or is) the source window. Otherwise, it is set
to None. The state component gives the logical state of the buttons and
modifier keys just before the event. The detail component type varies with the
event type:

┌──────────────────────────┬───────────────┐
│Event                     │Component      │
├──────────────────────────┼───────────────┤
│KeyPress, KeyRelease      │KEYCODE        │
├──────────────────────────┼───────────────┤
│ButtonPress, ButtonRelease│BUTTON         │
├──────────────────────────┼───────────────┤
│MotionNotify              │{ Normal Hint }│
└──────────────────────────┴───────────────┘

MotionNotify events are only generated when the motion begins and ends in the
window. The granularity of motion events is not guaranteed, but a client
selecting for motion events is guaranteed to get at least one event when the
pointer moves and comes to rest. Selecting PointerMotion receives events
independent of the state of the pointer buttons. By selecting some subset of 
Button[1-5]Motion instead, MotionNotify events will only be received when one
or more of the specified buttons are pressed. By selecting ButtonMotion, 
MotionNotify events will be received only when at least one button is pressed.
The events are always of type MotionNotify, independent of the selection. If 
PointerMotionHint is selected, the server is free to send only one MotionNotify
event (with detail Hint) to the client for the event window until either the
key or button state changes, the pointer leaves the event window, or the client
issues a QueryPointer or GetMotionEvents request.

Pointer Window events

EnterNotify
LeaveNotify
root, event: WINDOW
child: WINDOW or None
same-screen: BOOL
root-x, root-y, event-x, event-y: INT16
mode: { Normal, Grab, Ungrab}
detail: { Ancestor, Virtual, Inferior, Nonlinear, NonlinearVirtual}
focus: BOOL
state: SETofKEYBUTMASK
time: TIMESTAMP

If pointer motion or window hierarchy change causes the pointer to be in a
different window than before, EnterNotify and LeaveNotify events are generated
instead of a MotionNotify event. Only clients selecting EnterWindow on a window
receive EnterNotify events, and only clients selecting LeaveWindow receive 
LeaveNotify events. The pointer position reported in the event is always the
final position, not the initial position of the pointer. The root is the root
window for this position, and root-x and root-y are the pointer coordinates
relative to root's origin at the time of the event. Event is the event window.
If the event window is on the same screen as root, then event-x and event-y are
the pointer coordinates relative to the event window's origin. Otherwise,
event-x and event-y are zero. In a LeaveNotify event, if a child of the event
window contains the initial position of the pointer, then the child component
is set to that child. Otherwise, it is None. For an EnterNotify event, if a
child of the event window contains the final pointer position, then the child
component is set to that child. Otherwise, it is None. If the event window is
the focus window or an inferior of the focus window, then focus is True.
Otherwise, focus is False.

Normal pointer motion events have mode Normal. Pseudo-motion events when a grab
activates have mode Grab, and pseudo-motion events when a grab deactivates have
mode Ungrab.

All EnterNotify and LeaveNotify events caused by a hierarchy change are
generated after any hierarchy event caused by that change (that is, UnmapNotify
, MapNotify, ConfigureNotify, GravityNotify, CirculateNotify), but the ordering
of EnterNotify and LeaveNotify events with respect to FocusOut,
VisibilityNotify, and Expose events is not constrained.

Normal events are generated as follows:

When the pointer moves from window A to window B and A is an inferior of B:

  • LeaveNotify with detail Ancestor is generated on A.

  • LeaveNotify with detail Virtual is generated on each window between A and B
    exclusive (in that order).

  • EnterNotify with detail Inferior is generated on B.

When the pointer moves from window A to window B and B is an inferior of A:

  • LeaveNotify with detail Inferior is generated on A.

  • EnterNotify with detail Virtual is generated on each window between A and B
    exclusive (in that order).

  • EnterNotify with detail Ancestor is generated on B.

When the pointer moves from window A to window B and window C is their least
common ancestor:

  • LeaveNotify with detail Nonlinear is generated on A.

  • LeaveNotify with detail NonlinearVirtual is generated on each window
    between A and C exclusive (in that order).

  • EnterNotify with detail NonlinearVirtual is generated on each window
    between C and B exclusive (in that order).

  • EnterNotify with detail Nonlinear is generated on B.

When the pointer moves from window A to window B on different screens:

  • LeaveNotify with detail Nonlinear is generated on A.

  • If A is not a root window, LeaveNotify with detail NonlinearVirtual is
    generated on each window above A up to and including its root (in order).

  • If B is not a root window, EnterNotify with detail NonlinearVirtual is
    generated on each window from B's root down to but not including B (in
    order).

  • EnterNotify with detail Nonlinear is generated on B.

When a pointer grab activates (but after any initial warp into a confine-to
window and before generating any actual ButtonPress event that activates the
grab), G is the grab-window for the grab, and P is the window the pointer is
in:

  • EnterNotify and LeaveNotify events with mode Grab are generated (as for 
    Normal above) as if the pointer were to suddenly warp from its current
    position in P to some position in G. However, the pointer does not warp,
    and the pointer position is used as both the initial and final positions
    for the events.

When a pointer grab deactivates (but after generating any actual ButtonRelease
event that deactivates the grab), G is the grab-window for the grab, and P is
the window the pointer is in:

  • EnterNotify and LeaveNotify events with mode Ungrab are generated (as for 
    Normal above) as if the pointer were to suddenly warp from some position in
    G to its current position in P. However, the pointer does not warp, and the
    current pointer position is used as both the initial and final positions
    for the events.

Input Focus events

FocusIn
FocusOut
event: WINDOW
mode: { Normal, WhileGrabbed, Grab, Ungrab}
detail: { Ancestor, Virtual, Inferior, Nonlinear, NonlinearVirtual, Pointer,
PointerRoot, None }

These events are generated when the input focus changes and are reported to
clients selecting FocusChange on the window. Events generated by SetInputFocus
when the keyboard is not grabbed have mode Normal. Events generated by 
SetInputFocus when the keyboard is grabbed have mode WhileGrabbed. Events
generated when a keyboard grab activates have mode Grab, and events generated
when a keyboard grab deactivates have mode Ungrab.

All FocusOut events caused by a window unmap are generated after any
UnmapNotify event, but the ordering of FocusOut with respect to generated
EnterNotify, LeaveNotify, VisibilityNotify, and Expose events is not
constrained.

Normal and WhileGrabbed events are generated as follows:

When the focus moves from window A to window B, A is an inferior of B, and the
pointer is in window P:

  • FocusOut with detail Ancestor is generated on A.

  • FocusOut with detail Virtual is generated on each window between A and B
    exclusive (in order).

  • FocusIn with detail Inferior is generated on B.

  • If P is an inferior of B but P is not A or an inferior of A or an ancestor
    of A, FocusIn with detail Pointer is generated on each window below B down
    to and including P (in order).

When the focus moves from window A to window B, B is an inferior of A, and the
pointer is in window P:

  • If P is an inferior of A but P is not an inferior of B or an ancestor of B,
    FocusOut with detail Pointer is generated on each window from P up to but
    not including A (in order).

  • FocusOut with detail Inferior is generated on A.

  • FocusIn with detail Virtual is generated on each window between A and B
    exclusive (in order).

  • FocusIn with detail Ancestor is generated on B.

When the focus moves from window A to window B, window C is their least common
ancestor, and the pointer is in window P:

  • If P is an inferior of A, FocusOut with detail Pointer is generated on each
    window from P up to but not including A (in order).

  • FocusOut with detail Nonlinear is generated on A.

  • FocusOut with detail NonlinearVirtual is generated on each window between A
    and C exclusive (in order).

  • FocusIn with detail NonlinearVirtual is generated on each window between C
    and B exclusive (in order).

  • FocusIn with detail Nonlinear is generated on B.

  • If P is an inferior of B, FocusIn with detail Pointer is generated on each
    window below B down to and including P (in order).

When the focus moves from window A to window B on different screens and the
pointer is in window P:

  • If P is an inferior of A, FocusOut with detail Pointer is generated on each
    window from P up to but not including A (in order).

  • FocusOut with detail Nonlinear is generated on A.

  • If A is not a root window, FocusOut with detail NonlinearVirtual is
    generated on each window above A up to and including its root (in order).

  • If B is not a root window, FocusIn with detail NonlinearVirtual is
    generated on each window from B's root down to but not including B (in
    order).

  • FocusIn with detail Nonlinear is generated on B.

  • If P is an inferior of B, FocusIn with detail Pointer is generated on each
    window below B down to and including P (in order).

When the focus moves from window A to PointerRoot (or None) and the pointer is
in window P:

  • If P is an inferior of A, FocusOut with detail Pointer is generated on each
    window from P up to but not including A (in order).

  • FocusOut with detail Nonlinear is generated on A.

  • If A is not a root window, FocusOut with detail NonlinearVirtual is
    generated on each window above A up to and including its root (in order).

  • FocusIn with detail PointerRoot (or None) is generated on all root windows.

  • If the new focus is PointerRoot, FocusIn with detail Pointer is generated
    on each window from P's root down to and including P (in order).

When the focus moves from PointerRoot (or None) to window A and the pointer is
in window P:

  • If the old focus is PointerRoot, FocusOut with detail Pointer is generated
    on each window from P up to and including P's root (in order).

  • FocusOut with detail PointerRoot (or None) is generated on all root
    windows.

  • If A is not a root window, FocusIn with detail NonlinearVirtual is
    generated on each window from A's root down to but not including A (in
    order).

  • FocusIn with detail Nonlinear is generated on A.

  • If P is an inferior of A, FocusIn with detail Pointer is generated on each
    window below A down to and including P (in order).

When the focus moves from PointerRoot to None (or vice versa) and the pointer
is in window P:

  • If the old focus is PointerRoot, FocusOut with detail Pointer is generated
    on each window from P up to and including P's root (in order).

  • FocusOut with detail PointerRoot (or None) is generated on all root
    windows.

  • FocusIn with detail None (or PointerRoot) is generated on all root windows.

  • If the new focus is PointerRoot, FocusIn with detail Pointer is generated
    on each window from P's root down to and including P (in order).

When a keyboard grab activates (but before generating any actual KeyPress event
that activates the grab), G is the grab-window for the grab, and F is the
current focus:

  • FocusIn and FocusOut events with mode Grab are generated (as for Normal
    above) as if the focus were to change from F to G.

When a keyboard grab deactivates (but after generating any actual KeyRelease
event that deactivates the grab), G is the grab-window for the grab, and F is
the current focus:

  • FocusIn and FocusOut events with mode Ungrab are generated (as for Normal
    above) as if the focus were to change from G to F.

KeymapNotify

KeymapNotify
keys: LISTofCARD8

The value is a bit vector as described in QueryKeymap. This event is reported
to clients selecting KeymapState on a window and is generated immediately after
every EnterNotify and FocusIn.

Expose

Expose
window: WINDOW
x, y, width, height: CARD16
count: CARD16

This event is reported to clients selecting Exposure on the window. It is
generated when no valid contents are available for regions of a window, and
either the regions are visible, the regions are viewable and the server is
(perhaps newly) maintaining backing store on the window, or the window is not
viewable but the server is (perhaps newly) honoring window's backing-store
attribute of Always or WhenMapped. The regions are decomposed into an arbitrary
set of rectangles, and an Expose event is generated for each rectangle.

For a given action causing exposure events, the set of events for a given
window are guaranteed to be reported contiguously. If count is zero, then no
more Expose events for this window follow. If count is nonzero, then at least
that many more Expose events for this window follow (and possibly more).

The x and y coordinates are relative to window's origin and specify the
upper-left corner of a rectangle. The width and height specify the extent of
the rectangle.

Expose events are never generated on InputOnly windows.

All Expose events caused by a hierarchy change are generated after any
hierarchy event caused by that change (for example, UnmapNotify, MapNotify,
ConfigureNotify, GravityNotify, CirculateNotify). All Expose events on a given
window are generated after any VisibilityNotify event on that window, but it is
not required that all Expose events on all windows be generated after all 
Visibilitity events on all windows. The ordering of Expose events with respect
to FocusOut, EnterNotify, and LeaveNotify events is not constrained.

GraphicsExposure

GraphicsExposure
drawable: DRAWABLE
x, y, width, height: CARD16
count: CARD16
major-opcode: CARD8
minor-opcode: CARD16

This event is reported to a client using a graphics context with
graphics-exposures selected and is generated when a destination region could
not be computed due to an obscured or out-of-bounds source region. All of the
regions exposed by a given graphics request are guaranteed to be reported
contiguously. If count is zero then no more GraphicsExposure events for this
window follow. If count is nonzero, then at least that many more 
GraphicsExposure events for this window follow (and possibly more).

The x and y coordinates are relative to drawable's origin and specify the
upper-left corner of a rectangle. The width and height specify the extent of
the rectangle.

The major and minor opcodes identify the graphics request used. For the core
protocol, major-opcode is always CopyArea or CopyPlane, and minor-opcode is
always zero.

NoExposure

NoExposure
drawable: DRAWABLE
major-opcode: CARD8
minor-opcode: CARD16

This event is reported to a client using a graphics context with
graphics-exposures selected and is generated when a graphics request that might
produce GraphicsExposure events does not produce any. The drawable specifies
the destination used for the graphics request.

The major and minor opcodes identify the graphics request used. For the core
protocol, major-opcode is always CopyArea or CopyPlane, and the minor-opcode is
always zero.

VisibilityNotify

VisibilityNotify
window: WINDOW
state: { Unobscured, PartiallyObscured, FullyObscured}

This event is reported to clients selecting VisibilityChange on the window. In
the following, the state of the window is calculated ignoring all of the
window's subwindows. When a window changes state from partially or fully
obscured or not viewable to viewable and completely unobscured, an event with 
Unobscured is generated. When a window changes state from viewable and
completely unobscured, from viewable and completely obscured, or from not
viewable, to viewable and partially obscured, an event with PartiallyObscured
is generated. When a window changes state from viewable and completely
unobscured, from viewable and partially obscured, or from not viewable to
viewable and fully obscured, an event with FullyObscured is generated.

VisibilityNotify events are never generated on InputOnly windows.

All VisibilityNotify events caused by a hierarchy change are generated after
any hierarchy event caused by that change (for example, UnmapNotify, MapNotify,
ConfigureNotify, GravityNotify, CirculateNotify). Any VisibilityNotify event on
a given window is generated before any Expose events on that window, but it is
not required that all VisibilityNotify events on all windows be generated
before all Expose events on all windows. The ordering of VisibilityNotify
events with respect to FocusOut, EnterNotify, and LeaveNotify events is not
constrained.

CreateNotify

CreateNotify
parent, window: WINDOW
x, y: INT16
width, height, border-width: CARD16
override-redirect: BOOL

This event is reported to clients selecting SubstructureNotify on the parent
and is generated when the window is created. The arguments are as in the
CreateWindow request.

DestroyNotify

DestroyNotify
event, window: WINDOW

This event is reported to clients selecting StructureNotify on the window and
to clients selecting SubstructureNotify on the parent. It is generated when the
window is destroyed. The event is the window on which the event was generated,
and the window is the window that is destroyed.

The ordering of the DestroyNotify events is such that for any given window, 
DestroyNotify is generated on all inferiors of the window before being
generated on the window itself. The ordering among siblings and across
subhierarchies is not otherwise constrained.

UnmapNotify

UnmapNotify
event, window: WINDOW
from-configure: BOOL

This event is reported to clients selecting StructureNotify on the window and
to clients selecting SubstructureNotify on the parent. It is generated when the
window changes state from mapped to unmapped. The event is the window on which
the event was generated, and the window is the window that is unmapped. The
from-configure flag is True if the event was generated as a result of the
window's parent being resized when the window itself had a win-gravity of Unmap
.

MapNotify

MapNotify
event, window: WINDOW
override-redirect: BOOL

This event is reported to clients selecting StructureNotify on the window and
to clients selecting SubstructureNotify on the parent. It is generated when the
window changes state from unmapped to mapped. The event is the window on which
the event was generated, and the window is the window that is mapped. The
override-redirect flag is from the window's attribute.

MapRequest

MapRequest
parent, window: WINDOW

This event is reported to the client selecting SubstructureRedirect on the
parent and is generated when a MapWindow request is issued on an unmapped
window with an override-redirect attribute of False.

ReparentNotify

ReparentNotify
event, window, parent: WINDOW
x, y: INT16
override-redirect: BOOL

This event is reported to clients selecting SubstructureNotify on either the
old or the new parent and to clients selecting StructureNotify on the window.
It is generated when the window is reparented. The event is the window on which
the event was generated. The window is the window that has been rerooted. The
parent specifies the new parent. The x and y coordinates are relative to the
new parent's origin and specify the position of the upper-left outer corner of
the window. The override-redirect flag is from the window's attribute.

ConfigureNotify

ConfigureNotify
event, window: WINDOW
x, y: INT16
width, height, border-width: CARD16
above-sibling: WINDOW or None
override-redirect: BOOL

This event is reported to clients selecting StructureNotify on the window and
to clients selecting SubstructureNotify on the parent. It is generated when a
ConfigureWindow request actually changes the state of the window. The event is
the window on which the event was generated, and the window is the window that
is changed. The x and y coordinates are relative to the new parent's origin and
specify the position of the upper-left outer corner of the window. The width
and height specify the inside size, not including the border. If above-sibling
is None, then the window is on the bottom of the stack with respect to
siblings. Otherwise, the window is immediately on top of the specified sibling.
The override-redirect flag is from the window's attribute.

GravityNotify

GravityNotify
event, window: WINDOW
x, y: INT16

This event is reported to clients selecting SubstructureNotify on the parent
and to clients selecting StructureNotify on the window. It is generated when a
window is moved because of a change in size of the parent. The event is the
window on which the event was generated, and the window is the window that is
moved. The x and y coordinates are relative to the new parent's origin and
specify the position of the upper-left outer corner of the window.

ResizeRequest

ResizeRequest
window: WINDOW
width, height: CARD16

This event is reported to the client selecting ResizeRedirect on the window and
is generated when a ConfigureWindow request by some other client on the window
attempts to change the size of the window. The width and height are the
requested inside size, not including the border.

ConfigureRequest

ConfigureRequest
parent, window: WINDOW
x, y: INT16
width, height, border-width: CARD16
sibling: WINDOW or None
stack-mode: { Above, Below, TopIf, BottomIf, Opposite}
value-mask: BITMASK

This event is reported to the client selecting SubstructureRedirect on the
parent and is generated when a ConfigureWindow request is issued on the window
by some other client. The value-mask indicates which components were specified
in the request. The value-mask and the corresponding values are reported as
given in the request. The remaining values are filled in from the current
geometry of the window, except in the case of sibling and stack-mode, which are
reported as None and Above (respectively) if not given in the request.

CirculateNotify

CirculateNotify
event, window: WINDOW
place: { Top, Bottom}

This event is reported to clients selecting StructureNotify on the window and
to clients selecting SubstructureNotify on the parent. It is generated when the
window is actually restacked from a CirculateWindow request. The event is the
window on which the event was generated, and the window is the window that is
restacked. If place is Top, the window is now on top of all siblings.
Otherwise, it is below all siblings.

CirculateRequest

CirculateRequest
parent, window: WINDOW
place: { Top, Bottom}

This event is reported to the client selecting SubstructureRedirect on the
parent and is generated when a CirculateWindow request is issued on the parent
and a window actually needs to be restacked. The window specifies the window to
be restacked, and the place specifies what the new position in the stacking
order should be.

PropertyNotify

PropertyNotify
window: WINDOW
atom: ATOM
state: { NewValue, Deleted}
time: TIMESTAMP

This event is reported to clients selecting PropertyChange on the window and is
generated with state NewValue when a property of the window is changed using
ChangeProperty or RotateProperties, even when adding zero-length data using 
ChangeProperty and when replacing all or part of a property with identical data
using ChangeProperty or RotateProperties. It is generated with state Deleted
when a property of the window is deleted using request DeleteProperty or
GetProperty. The timestamp indicates the server time when the property was
changed.

SelectionClear

SelectionClear
owner: WINDOW
selection: ATOM
time: TIMESTAMP

This event is reported to the current owner of a selection and is generated
when a new owner is being defined by means of SetSelectionOwner. The timestamp
is the last-change time recorded for the selection. The owner argument is the
window that was specified by the current owner in its SetSelectionOwner
request.

SelectionRequest

SelectionRequest
owner: WINDOW
selection: ATOM
target: ATOM
property: ATOM or None
requestor: WINDOW
time: TIMESTAMP or CurrentTime

This event is reported to the owner of a selection and is generated when a
client issues a ConvertSelection request. The owner argument is the window that
was specified in the SetSelectionOwner request. The remaining arguments are as
in the ConvertSelection request.

The owner should convert the selection based on the specified target type and
send a SelectionNotify back to the requestor. A complete specification for
using selections is given in the X.Org standard Inter-Client Communication
Conventions Manual.

SelectionNotify

SelectionNotify
requestor: WINDOW
selection, target: ATOM
property: ATOM or None
time: TIMESTAMP or CurrentTime

This event is generated by the server in response to a ConvertSelection request
when there is no owner for the selection. When there is an owner, it should be
generated by the owner using SendEvent. The owner of a selection should send
this event to a requestor either when a selection has been converted and stored
as a property or when a selection conversion could not be performed (indicated
with property None).

ColormapNotify

ColormapNotify
window: WINDOW
colormap: COLORMAP or None
new: BOOL
state: { Installed, Uninstalled}

This event is reported to clients selecting ColormapChange on the window. It is
generated with value True for new when the colormap attribute of the window is
changed and is generated with value False for new when the colormap of a window
is installed or uninstalled. In either case, the state indicates whether the
colormap is currently installed.

MappingNotify

MappingNotify
request: { Modifier, Keyboard, Pointer}
first-keycode, count: CARD8

This event is sent to all clients. There is no mechanism to express disinterest
in this event. The detail indicates the kind of change that occurred: Modifiers
for a successful SetModifierMapping, Keyboard for a successful
ChangeKeyboardMapping, and Pointer for a successful SetPointerMapping. If the
detail is Keyboard, then first-keycode and count indicate the range of altered
keycodes.

ClientMessage

ClientMessage
window: WINDOW
type: ATOM
format: {8, 16, 32}
data: LISTofINT8 or LISTofINT16 or LISTofINT32

This event is only generated by clients using SendEvent. The type specifies how
the data is to be interpreted by the receiving client; the server places no
interpretation on the type or the data. The format specifies whether the data
should be viewed as a list of 8-bit, 16-bit, or 32-bit quantities, so that the
server can correctly byte-swap, as necessary. The data always consists of
either 20 8-bit values or 10 16-bit values or 5 32-bit values, although
particular message types might not make use of all of these values.

Chapter 12. Flow Control and Concurrency

Whenever the server is writing to a given connection, it is permissible for the
server to stop reading from that connection (but if the writing would block, it
must continue to service other connections). The server is not required to
buffer more than a single request per connection at one time. For a given
connection to the server, a client can block while reading from the connection
but should undertake to read (events and errors) when writing would block.
Failure on the part of a client to obey this rule could result in a deadlocked
connection, although deadlock is probably unlikely unless either the transport
layer has very little buffering or the client attempts to send large numbers of
requests without ever reading replies or checking for errors and events.

Whether or not a server is implemented with internal concurrency, the overall
effect must be as if individual requests are executed to completion in some
serial order, and requests from a given connection must be executed in delivery
order (that is, the total execution order is a shuffle of the individual
streams). The execution of a request includes validating all arguments,
collecting all data for any reply, and generating and queueing all required
events. However, it does not include the actual transmission of the reply and
the events. In addition, the effect of any other cause that can generate
multiple events (for example, activation of a grab or pointer motion) must
effectively generate and queue all required events indivisibly with respect to
all other causes and requests. For a request from a given client, any events
destined for that client that are caused by executing the request must be sent
to the client before any reply or error is sent.

Appendix A. KEYSYM Encoding

Table of Contents

Special KEYSYMs
Latin-1 KEYSYMs
Unicode KEYSYMs
Function KEYSYMs
Vendor KEYSYMs
Legacy KEYSYMs

KEYSYM values are 32-bit integers that encode the symbols on the keycaps of a
keyboard. The three most significant bits are always zero, which leaves a
29-bit number space. For convenience, KEYSYM values can be viewed as split into
four bytes:

  • Byte 1 is the most significant eight bits (three zero bits and the
    most-significant five bits of the 29-bit effective value)

  • Byte 2 is the next most-significant eight bits

  • Byte 3 is the next most-significant eight bits

  • Byte 4 is the least-significant eight bits

There are six categories of KEYSYM values.

Special KEYSYMs

There are two special values: NoSymbol and VoidSymbol. They are used to
indicate the absence of symbols (see Section 5, Keyboards).

┌──────┬──────┬──────┬──────┬──────────┬──────────┐
│Byte 1│Byte 2│Byte 3│Byte 4│Hex. value│Name      │
├──────┼──────┼──────┼──────┼──────────┼──────────┤
│0     │0     │0     │0     │#x00000000│NoSymbol  │
├──────┼──────┼──────┼──────┼──────────┼──────────┤
│0     │255   │255   │255   │#x00FFFFFF│VoidSymbol│
└──────┴──────┴──────┴──────┴──────────┴──────────┘

Latin-1 KEYSYMs

The Latin-1 KEYSYMs occupy the range #x0020 to #x007E and #x00A0 to #00FF and
represent the ISO 10646 / Unicode characters U+0020 to U+007E and U+00A0 to
U+00FF, respectively.

Unicode KEYSYMs

These occupy the range #x01000100 to #x0110FFFF and represent the ISO 10646 /
Unicode characters U+0100 to U+10FFFF, respectively. The numeric value of a
Unicode KEYSYM is the Unicode position of the corresponding character plus #
x01000000. In the interest of backwards compatibility, clients should be able
to process both the Unicode KEYSYM and the Legacy KEYSYM for those characters
where both exist.

Dead keys, which place an accent on the next character entered, shall be
encoded as Function KEYSYMs, and not as the Unicode KEYSYM corresponding to an
equivalent combining character. Where a keycap indicates a specific function
with a graphical symbol that is also available in Unicode (e.g., an upwards
arrow for the cursor up function), the appropriate Function KEYSYM should be
used, and not the Unicode KEYSYM corresponding to the depicted symbol.

Function KEYSYMs

These represent keycap symbols that do not directly represent elements of a
coded character set. Instead, they typically identify a software function,
mode, or operation (e.g., cursor up, caps lock, insert) that can be activated
using a dedicated key. Function KEYSYMs have zero values for bytes 1 and 2.
Byte 3 distinguishes between several 8-bit sets within which byte 4 identifies
the individual function key.

┌──────┬────────────────────────┐
│Byte 3│Byte 4                  │
├──────┼────────────────────────┤
│255   │Keyboard                │
├──────┼────────────────────────┤
│254   │Keyboard (XKB) Extension│
├──────┼────────────────────────┤
│253   │3270                    │
└──────┴────────────────────────┘

Within a national market, keyboards tend to be comparatively standard with
respect to the character keys, but they can differ significantly on the
miscellaneous function keys. Some have function keys left over from early
timesharing days, others were designed for a specific application, such as text
processing, web browsing, or accessing audiovisual data. The symbols on the
keycaps can differ significantly between manufacturers and national markets,
even where they denote the same software function (e.g., Ctrl in the U.S.
versus Strg in Germany)

There are two ways of thinking about how to define KEYSYMs for such a world:

  • The Engraving approach

  • The Common approach

The Engraving approach is to create a KEYSYM for every unique key engraving.
This is effectively taking the union of all key engravings on all keyboards.
For example, some keyboards label function keys across the top as F1 through
Fn, and others label them as PF1 through PFn. These would be different keys
under the Engraving approach. Likewise, Lock would differ from Shift Lock,
which is different from the up-arrow symbol that has the effect of changing
lowercase to uppercase. There are lots of other aliases such as Del, DEL,
Delete, Remove, and so forth. The Engraving approach makes it easy to decide if
a new entry should be added to the KEYSYM set: if it does not exactly match an
existing one, then a new one is created.

The Common approach tries to capture all of the keys present on an interesting
number of keyboards, folding likely aliases into the same KEYSYM. For example,
Del, DEL, and Delete are all merged into a single KEYSYM. Vendors can augment
the KEYSYM set (using the vendor-specific encoding space) to include all of
their unique keys that were not included in the standard set. Each vendor
decides which of its keys map into the standard KEYSYMs, which presumably can
be overridden by a user. It is more difficult to implement this approach,
because judgment is required about when a sufficient set of keyboards
implements an engraving to justify making it a KEYSYM in the standard set and
about which engravings should be merged into a single KEYSYM.

Although neither scheme is perfect or elegant, the Common approach has been
selected because it makes it easier to write a portable application. Having the
Delete functionality merged into a single KEYSYM allows an application to
implement a deletion function and expect reasonable bindings on a wide set of
workstations. Under the Common approach, application writers are still free to
look for and interpret vendor-specific KEYSYMs, but because they are in the
extended set, the application developer is more conscious that they are writing
the application in a nonportable fashion.

The Keyboard set is a miscellaneous collection of commonly occurring keys on
keyboards. Within this set, the numeric keypad symbols are generally duplicates
of symbols found on keys on the main part of the keyboard, but they are
distinguished here because they often have a distinguishable semantics
associated with them.

┌────────────┬────────────────────────────────────────────────┬────────┐
│KEYSYM value│Name                                            │Set     │
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF08      │BACKSPACE, BACK SPACE, BACK CHAR                │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF09      │TAB                                             │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF0A      │LINEFEED, LF                                    │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF0B      │CLEAR                                           │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF0D      │RETURN, ENTER                                   │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF13      │PAUSE, HOLD                                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF14      │SCROLL LOCK                                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF15      │SYS REQ, SYSTEM REQUEST                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF1B      │ESCAPE                                          │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF20      │MULTI-KEY CHARACTER PREFACE                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF21      │KANJI, KANJI CONVERT                            │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF22      │MUHENKAN                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF23      │HENKAN MODE                                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF24      │ROMAJI                                          │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF25      │HIRAGANA                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF26      │KATAKANA                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF27      │HIRAGANA/KATAKANA TOGGLE                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF28      │ZENKAKU                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF29      │HANKAKU                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF2A      │ZENKAKU/HANKAKU TOGGLE                          │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF2B      │TOUROKU                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF2C      │MASSYO                                          │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF2D      │KANA LOCK                                       │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF2E      │KANA SHIFT                                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF2F      │EISU SHIFT                                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF30      │EISU TOGGLE                                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF31      │HANGUL START/STOP (TOGGLE)                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF32      │HANGUL START                                    │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF33      │HANGUL END, ENGLISH START                       │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF34      │START HANGUL/HANJA CONVERSION                   │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF35      │HANGUL JAMO MODE                                │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF36      │HANGUL ROMAJA MODE                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF37      │HANGUL CODE INPUT                               │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF38      │HANGUL JEONJA MODE                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF39      │HANGUL BANJA MODE                               │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF3A      │HANGUL PREHANJA CONVERSION                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF3B      │HANGUL POSTHANJA CONVERSION                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF3C      │HANGUL SINGLE CANDIDATE                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF3D      │HANGUL MULTIPLE CANDIDATE                       │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF3E      │HANGUL PREVIOUS CANDIDATE                       │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF3F      │HANGUL SPECIAL SYMBOLS                          │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF50      │HOME                                            │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF51      │LEFT, MOVE LEFT, LEFT ARROW                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF52      │UP, MOVE UP, UP ARROW                           │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF53      │RIGHT, MOVE RIGHT, RIGHT ARROW                  │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF54      │DOWN, MOVE DOWN, DOWN ARROW                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF55      │PRIOR, PREVIOUS, PAGE UP                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF56      │NEXT, PAGE DOWN                                 │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF57      │END, EOL                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF58      │BEGIN, BOL                                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF60      │SELECT, MARK                                    │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF61      │PRINT                                           │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF62      │EXECUTE, RUN, DO                                │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF63      │INSERT, INSERT HERE                             │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF65      │UNDO, OOPS                                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF66      │REDO, AGAIN                                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF67      │MENU                                            │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF68      │FIND, SEARCH                                    │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF69      │CANCEL, STOP, ABORT, EXIT                       │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF6A      │HELP                                            │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF6B      │BREAK                                           │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF7E      │MODE SWITCH, SCRIPT SWITCH, CHARACTER SET SWITCH│Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF7F      │NUM LOCK                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF80      │KEYPAD SPACE                                    │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF89      │KEYPAD TAB                                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF8D      │KEYPAD ENTER                                    │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF91      │KEYPAD F1, PF1, A                               │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF92      │KEYPAD F2, PF2, B                               │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF93      │KEYPAD F3, PF3, C                               │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF94      │KEYPAD F4, PF4, D                               │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF95      │KEYPAD HOME                                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF96      │KEYPAD LEFT                                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF97      │KEYPAD UP                                       │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF98      │KEYPAD RIGHT                                    │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF99      │KEYPAD DOWN                                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF9A      │KEYPAD PRIOR, PAGE UP                           │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF9B      │KEYPAD NEXT, PAGE DOWN                          │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF9C      │KEYPAD END                                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF9D      │KEYPAD BEGIN                                    │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF9E      │KEYPAD INSERT                                   │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFF9F      │KEYPAD DELETE                                   │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFAA      │KEYPAD MULTIPLICATION SIGN, ASTERISK            │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFAB      │KEYPAD PLUS SIGN                                │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFAC      │KEYPAD SEPARATOR, COMMA                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFAD      │KEYPAD MINUS SIGN, HYPHEN                       │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFAE      │KEYPAD DECIMAL POINT, FULL STOP                 │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFAF      │KEYPAD DIVISION SIGN, SOLIDUS                   │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFB0      │KEYPAD DIGIT ZERO                               │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFB1      │KEYPAD DIGIT ONE                                │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFB2      │KEYPAD DIGIT TWO                                │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFB3      │KEYPAD DIGIT THREE                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFB4      │KEYPAD DIGIT FOUR                               │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFB5      │KEYPAD DIGIT FIVE                               │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFB6      │KEYPAD DIGIT SIX                                │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFB7      │KEYPAD DIGIT SEVEN                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFB8      │KEYPAD DIGIT EIGHT                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFB9      │KEYPAD DIGIT NINE                               │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFBD      │KEYPAD EQUALS SIGN                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFBE      │F1                                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFBF      │F2                                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFC0      │F3                                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFC1      │F4                                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFC2      │F5                                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFC3      │F6                                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFC4      │F7                                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFC5      │F8                                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFC6      │F9                                              │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFC7      │F10                                             │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFC8      │F11, L1                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFC9      │F12, L2                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFCA      │F13, L3                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFCB      │F14, L4                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFCC      │F15, L5                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFCD      │F16, L6                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFCE      │F17, L7                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFCF      │F18, L8                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFD0      │F19, L9                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFD1      │F20, L10                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFD2      │F21, R1                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFD3      │F22, R2                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFD4      │F23, R3                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFD5      │F24, R4                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFD6      │F25, R5                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFD7      │F26, R6                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFD8      │F27, R7                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFD9      │F28, R8                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFDA      │F29, R9                                         │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFDB      │F30, R10                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFDC      │F31, R11                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFDD      │F32, R12                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFDE      │F33, R13                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFDF      │F34, R14                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFE0      │F35, R15                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFE1      │LEFT SHIFT                                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFE2      │RIGHT SHIFT                                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFE3      │LEFT CONTROL                                    │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFE4      │RIGHT CONTROL                                   │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFE5      │CAPS LOCK                                       │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFE6      │SHIFT LOCK                                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFE7      │LEFT META                                       │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFE8      │RIGHT META                                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFE9      │LEFT ALT                                        │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFEA      │RIGHT ALT                                       │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFEB      │LEFT SUPER                                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFEC      │RIGHT SUPER                                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFED      │LEFT HYPER                                      │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFEE      │RIGHT HYPER                                     │Keyboard│
├────────────┼────────────────────────────────────────────────┼────────┤
│#xFFFF      │DELETE, RUBOUT                                  │Keyboard│
└────────────┴────────────────────────────────────────────────┴────────┘

The Keyboard (XKB) Extension set, which provides among other things a range of
dead keys, is defined in "The X Keyboard Extension: Protocol Specification",
Appendix C.

The 3270 set defines additional keys that are specific to IBM 3270 terminals.

┌────────────┬─────────────────┬────┐
│KEYSYM value│Name             │Set │
├────────────┼─────────────────┼────┤
│#xFD01      │3270 DUPLICATE   │3270│
├────────────┼─────────────────┼────┤
│#xFD02      │3270 FIELDMARK   │3270│
├────────────┼─────────────────┼────┤
│#xFD03      │3270 RIGHT2      │3270│
├────────────┼─────────────────┼────┤
│#xFD04      │3270 LEFT2       │3270│
├────────────┼─────────────────┼────┤
│#xFD05      │3270 BACKTAB     │3270│
├────────────┼─────────────────┼────┤
│#xFD06      │3270 ERASEEOF    │3270│
├────────────┼─────────────────┼────┤
│#xFD07      │3270 ERASEINPUT  │3270│
├────────────┼─────────────────┼────┤
│#xFD08      │3270 RESET       │3270│
├────────────┼─────────────────┼────┤
│#xFD09      │3270 QUIT        │3270│
├────────────┼─────────────────┼────┤
│#xFD0A      │3270 PA1         │3270│
├────────────┼─────────────────┼────┤
│#xFD0B      │3270 PA2         │3270│
├────────────┼─────────────────┼────┤
│#xFD0C      │3270 PA3         │3270│
├────────────┼─────────────────┼────┤
│#xFD0D      │3270 TEST        │3270│
├────────────┼─────────────────┼────┤
│#xFD0E      │3270 ATTN        │3270│
├────────────┼─────────────────┼────┤
│#xFD0F      │3270 CURSORBLINK │3270│
├────────────┼─────────────────┼────┤
│#xFD10      │3270 ALTCURSOR   │3270│
├────────────┼─────────────────┼────┤
│#xFD11      │3270 KEYCLICK    │3270│
├────────────┼─────────────────┼────┤
│#xFD12      │3270 JUMP        │3270│
├────────────┼─────────────────┼────┤
│#xFD13      │3270 IDENT       │3270│
├────────────┼─────────────────┼────┤
│#xFD14      │3270 RULE        │3270│
├────────────┼─────────────────┼────┤
│#xFD15      │3270 COPY        │3270│
├────────────┼─────────────────┼────┤
│#xFD16      │3270 PLAY        │3270│
├────────────┼─────────────────┼────┤
│#xFD17      │3270 SETUP       │3270│
├────────────┼─────────────────┼────┤
│#xFD18      │3270 RECORD      │3270│
├────────────┼─────────────────┼────┤
│#xFD19      │3270 CHANGESCREEN│3270│
├────────────┼─────────────────┼────┤
│#xFD1A      │3270 DELETEWORD  │3270│
├────────────┼─────────────────┼────┤
│#xFD1B      │3270 EXSELECT    │3270│
├────────────┼─────────────────┼────┤
│#xFD1C      │3270 CURSORSELECT│3270│
├────────────┼─────────────────┼────┤
│#xFD1D      │3270 PRINTSCREEN │3270│
├────────────┼─────────────────┼────┤
│#xFD1E      │3270 ENTER       │3270│
└────────────┴─────────────────┴────┘

Vendor KEYSYMs

The KEYSYM number range #x10000000 to #x1FFFFFFF is available for
vendor-specific extensions. Among these, the range #x11000000 to #x1100FFFF is
designated for keypad KEYSYMs.

Legacy KEYSYMs

These date from the time before ISO 10646 / Unicode was available. They
represent characters from a number of different older 8-bit coded character
sets and have zero values for bytes 1 and 2. Byte 3 indicates a coded character
set and byte 4 is the 8-bit value of the particular character within that set.

┌──────┬──────────┬──────┬────────┐
│Byte 3│Byte 4    │Byte 3│Byte 4  │
├──────┼──────────┼──────┼────────┤
│1     │Latin-2   │11    │APL     │
├──────┼──────────┼──────┼────────┤
│2     │Latin-3   │12    │Hebrew  │
├──────┼──────────┼──────┼────────┤
│3     │Latin-4   │13    │Thai    │
├──────┼──────────┼──────┼────────┤
│4     │Kana      │14    │Korean  │
├──────┼──────────┼──────┼────────┤
│5     │Arabic    │15    │Latin-5 │
├──────┼──────────┼──────┼────────┤
│6     │Cyrillic  │16    │Latin-6 │
├──────┼──────────┼──────┼────────┤
│7     │Greek     │17    │Latin-7 │
├──────┼──────────┼──────┼────────┤
│8     │Technical │18    │Latin-8 │
├──────┼──────────┼──────┼────────┤
│9     │Special   │19    │Latin-9 │
├──────┼──────────┼──────┼────────┤
│10    │Publishing│32    │Currency│
└──────┴──────────┴──────┴────────┘

Each character set contains gaps where codes have been removed that were
duplicates with codes in previous character sets (that is, character sets with
lesser byte 3 value).

The Latin, Arabic, Cyrillic, Greek, Hebrew, and Thai sets were taken from the
early drafts of the relevant ISO 8859 parts available at the time. However, in
the case of the Cyrillic and Greek sets, these turned out differently in the
final versions of the ISO standard. The Technical, Special, and Publishing sets
are based on Digital Equipment Corporation standards, as no equivalent
international standards were available at the time.

The table below lists all standardized Legacy KEYSYMs, along with the name used
in the source document. Where there exists an unambiguous equivalent in
Unicode, as it is the case with all ISO 8859 characters, it is given in the
second column as a cross reference. Where there is no Unicode number provided,
the exact semantics of the KEYSYM may have been lost and a Unicode KEYSYM
should be used instead, if available.

As support of Unicode KEYSYMs increases, some or all of the Legacy KEYSYMs may
be phased out and withdrawn in future versions of this standard. Most KEYSYMs
in the sets Technical, Special, Publishing, APL and Currency (with the
exception of #x20AC) were probably never used in practice, and were not
supported by pre-Unicode fonts. In particular, the Currency set, which was
copied from Unicode, has already been deprecated by the introduction of the
Unicode KEYSYMs.

┌──────────┬───────────┬────────────────────────────────────────────┬─────────┐
│KEYSYM    │Unicode    │Name                                        │Set      │
│value     │value      │                                            │         │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01A1    │U+0104     │LATIN CAPITAL LETTER A WITH OGONEK          │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01A2    │U+02D8     │BREVE                                       │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01A3    │U+0141     │LATIN CAPITAL LETTER L WITH STROKE          │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01A5    │U+013D     │LATIN CAPITAL LETTER L WITH CARON           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01A6    │U+015A     │LATIN CAPITAL LETTER S WITH ACUTE           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01A9    │U+0160     │LATIN CAPITAL LETTER S WITH CARON           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01AA    │U+015E     │LATIN CAPITAL LETTER S WITH CEDILLA         │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01AB    │U+0164     │LATIN CAPITAL LETTER T WITH CARON           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01AC    │U+0179     │LATIN CAPITAL LETTER Z WITH ACUTE           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01AE    │U+017D     │LATIN CAPITAL LETTER Z WITH CARON           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01AF    │U+017B     │LATIN CAPITAL LETTER Z WITH DOT ABOVE       │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01B1    │U+0105     │LATIN SMALL LETTER A WITH OGONEK            │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01B2    │U+02DB     │OGONEK                                      │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01B3    │U+0142     │LATIN SMALL LETTER L WITH STROKE            │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01B5    │U+013E     │LATIN SMALL LETTER L WITH CARON             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01B6    │U+015B     │LATIN SMALL LETTER S WITH ACUTE             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01B7    │U+02C7     │CARON                                       │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01B9    │U+0161     │LATIN SMALL LETTER S WITH CARON             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01BA    │U+015F     │LATIN SMALL LETTER S WITH CEDILLA           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01BB    │U+0165     │LATIN SMALL LETTER T WITH CARON             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01BC    │U+017A     │LATIN SMALL LETTER Z WITH ACUTE             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01BD    │U+02DD     │DOUBLE ACUTE ACCENT                         │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01BE    │U+017E     │LATIN SMALL LETTER Z WITH CARON             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01BF    │U+017C     │LATIN SMALL LETTER Z WITH DOT ABOVE         │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01C0    │U+0154     │LATIN CAPITAL LETTER R WITH ACUTE           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01C3    │U+0102     │LATIN CAPITAL LETTER A WITH BREVE           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01C5    │U+0139     │LATIN CAPITAL LETTER L WITH ACUTE           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01C6    │U+0106     │LATIN CAPITAL LETTER C WITH ACUTE           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01C8    │U+010C     │LATIN CAPITAL LETTER C WITH CARON           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01CA    │U+0118     │LATIN CAPITAL LETTER E WITH OGONEK          │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01CC    │U+011A     │LATIN CAPITAL LETTER E WITH CARON           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01CF    │U+010E     │LATIN CAPITAL LETTER D WITH CARON           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01D0    │U+0110     │LATIN CAPITAL LETTER D WITH STROKE          │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01D1    │U+0143     │LATIN CAPITAL LETTER N WITH ACUTE           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01D2    │U+0147     │LATIN CAPITAL LETTER N WITH CARON           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01D5    │U+0150     │LATIN CAPITAL LETTER O WITH DOUBLE ACUTE    │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01D8    │U+0158     │LATIN CAPITAL LETTER R WITH CARON           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01D9    │U+016E     │LATIN CAPITAL LETTER U WITH RING ABOVE      │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01DB    │U+0170     │LATIN CAPITAL LETTER U WITH DOUBLE ACUTE    │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01DE    │U+0162     │LATIN CAPITAL LETTER T WITH CEDILLA         │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01E0    │U+0155     │LATIN SMALL LETTER R WITH ACUTE             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01E3    │U+0103     │LATIN SMALL LETTER A WITH BREVE             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01E5    │U+013A     │LATIN SMALL LETTER L WITH ACUTE             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01E6    │U+0107     │LATIN SMALL LETTER C WITH ACUTE             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01E8    │U+010D     │LATIN SMALL LETTER C WITH CARON             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01EA    │U+0119     │LATIN SMALL LETTER E WITH OGONEK            │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01EC    │U+011B     │LATIN SMALL LETTER E WITH CARON             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01EF    │U+010F     │LATIN SMALL LETTER D WITH CARON             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01F0    │U+0111     │LATIN SMALL LETTER D WITH STROKE            │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01F1    │U+0144     │LATIN SMALL LETTER N WITH ACUTE             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01F2    │U+0148     │LATIN SMALL LETTER N WITH CARON             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01F5    │U+0151     │LATIN SMALL LETTER O WITH DOUBLE ACUTE      │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01F8    │U+0159     │LATIN SMALL LETTER R WITH CARON             │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01F9    │U+016F     │LATIN SMALL LETTER U WITH RING ABOVE        │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01FB    │U+0171     │LATIN SMALL LETTER U WITH DOUBLE ACUTE      │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01FE    │U+0163     │LATIN SMALL LETTER T WITH CEDILLA           │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x01FF    │U+02D9     │DOT ABOVE                                   │Latin-2  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02A1    │U+0126     │LATIN CAPITAL LETTER H WITH STROKE          │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02A6    │U+0124     │LATIN CAPITAL LETTER H WITH CIRCUMFLEX      │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02A9    │U+0130     │LATIN CAPITAL LETTER I WITH DOT ABOVE       │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02AB    │U+011E     │LATIN CAPITAL LETTER G WITH BREVE           │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02AC    │U+0134     │LATIN CAPITAL LETTER J WITH CIRCUMFLEX      │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02B1    │U+0127     │LATIN SMALL LETTER H WITH STROKE            │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02B6    │U+0125     │LATIN SMALL LETTER H WITH CIRCUMFLEX        │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02B9    │U+0131     │LATIN SMALL LETTER DOTLESS I                │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02BB    │U+011F     │LATIN SMALL LETTER G WITH BREVE             │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02BC    │U+0135     │LATIN SMALL LETTER J WITH CIRCUMFLEX        │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02C5    │U+010A     │LATIN CAPITAL LETTER C WITH DOT ABOVE       │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02C6    │U+0108     │LATIN CAPITAL LETTER C WITH CIRCUMFLEX      │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02D5    │U+0120     │LATIN CAPITAL LETTER G WITH DOT ABOVE       │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02D8    │U+011C     │LATIN CAPITAL LETTER G WITH CIRCUMFLEX      │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02DD    │U+016C     │LATIN CAPITAL LETTER U WITH BREVE           │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02DE    │U+015C     │LATIN CAPITAL LETTER S WITH CIRCUMFLEX      │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02E5    │U+010B     │LATIN SMALL LETTER C WITH DOT ABOVE         │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02E6    │U+0109     │LATIN SMALL LETTER C WITH CIRCUMFLEX        │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02F5    │U+0121     │LATIN SMALL LETTER G WITH DOT ABOVE         │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02F8    │U+011D     │LATIN SMALL LETTER G WITH CIRCUMFLEX        │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02FD    │U+016D     │LATIN SMALL LETTER U WITH BREVE             │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x02FE    │U+015D     │LATIN SMALL LETTER S WITH CIRCUMFLEX        │Latin-3  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03A2    │U+0138     │LATIN SMALL LETTER KRA                      │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03A3    │U+0156     │LATIN CAPITAL LETTER R WITH CEDILLA         │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03A5    │U+0128     │LATIN CAPITAL LETTER I WITH TILDE           │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03A6    │U+013B     │LATIN CAPITAL LETTER L WITH CEDILLA         │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03AA    │U+0112     │LATIN CAPITAL LETTER E WITH MACRON          │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03AB    │U+0122     │LATIN CAPITAL LETTER G WITH CEDILLA         │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03AC    │U+0166     │LATIN CAPITAL LETTER T WITH STROKE          │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03B3    │U+0157     │LATIN SMALL LETTER R WITH CEDILLA           │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03B5    │U+0129     │LATIN SMALL LETTER I WITH TILDE             │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03B6    │U+013C     │LATIN SMALL LETTER L WITH CEDILLA           │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03BA    │U+0113     │LATIN SMALL LETTER E WITH MACRON            │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03BB    │U+0123     │LATIN SMALL LETTER G WITH CEDILLA           │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03BC    │U+0167     │LATIN SMALL LETTER T WITH STROKE            │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03BD    │U+014A     │LATIN CAPITAL LETTER ENG                    │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03BF    │U+014B     │LATIN SMALL LETTER ENG                      │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03C0    │U+0100     │LATIN CAPITAL LETTER A WITH MACRON          │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03C7    │U+012E     │LATIN CAPITAL LETTER I WITH OGONEK          │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03CC    │U+0116     │LATIN CAPITAL LETTER E WITH DOT ABOVE       │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03CF    │U+012A     │LATIN CAPITAL LETTER I WITH MACRON          │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03D1    │U+0145     │LATIN CAPITAL LETTER N WITH CEDILLA         │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03D2    │U+014C     │LATIN CAPITAL LETTER O WITH MACRON          │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03D3    │U+0136     │LATIN CAPITAL LETTER K WITH CEDILLA         │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03D9    │U+0172     │LATIN CAPITAL LETTER U WITH OGONEK          │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03DD    │U+0168     │LATIN CAPITAL LETTER U WITH TILDE           │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03DE    │U+016A     │LATIN CAPITAL LETTER U WITH MACRON          │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03E0    │U+0101     │LATIN SMALL LETTER A WITH MACRON            │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03E7    │U+012F     │LATIN SMALL LETTER I WITH OGONEK            │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03EC    │U+0117     │LATIN SMALL LETTER E WITH DOT ABOVE         │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03EF    │U+012B     │LATIN SMALL LETTER I WITH MACRON            │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03F1    │U+0146     │LATIN SMALL LETTER N WITH CEDILLA           │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03F2    │U+014D     │LATIN SMALL LETTER O WITH MACRON            │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03F3    │U+0137     │LATIN SMALL LETTER K WITH CEDILLA           │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03F9    │U+0173     │LATIN SMALL LETTER U WITH OGONEK            │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03FD    │U+0169     │LATIN SMALL LETTER U WITH TILDE             │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x03FE    │U+016B     │LATIN SMALL LETTER U WITH MACRON            │Latin-4  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x047E    │U+203E     │OVERLINE                                    │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04A1    │U+3002     │KANA FULL STOP                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04A2    │U+300C     │KANA OPENING BRACKET                        │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04A3    │U+300D     │KANA CLOSING BRACKET                        │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04A4    │U+3001     │KANA COMMA                                  │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04A5    │U+30FB     │KANA CONJUNCTIVE                            │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04A6    │U+30F2     │KANA LETTER WO                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04A7    │U+30A1     │KANA LETTER SMALL A                         │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04A8    │U+30A3     │KANA LETTER SMALL I                         │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04A9    │U+30A5     │KANA LETTER SMALL U                         │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04AA    │U+30A7     │KANA LETTER SMALL E                         │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04AB    │U+30A9     │KANA LETTER SMALL O                         │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04AC    │U+30E3     │KANA LETTER SMALL YA                        │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04AD    │U+30E5     │KANA LETTER SMALL YU                        │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04AE    │U+30E7     │KANA LETTER SMALL YO                        │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04AF    │U+30C3     │KANA LETTER SMALL TSU                       │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04B0    │U+30FC     │PROLONGED SOUND SYMBOL                      │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04B1    │U+30A2     │KANA LETTER A                               │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04B2    │U+30A4     │KANA LETTER I                               │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04B3    │U+30A6     │KANA LETTER U                               │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04B4    │U+30A8     │KANA LETTER E                               │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04B5    │U+30AA     │KANA LETTER O                               │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04B6    │U+30AB     │KANA LETTER KA                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04B7    │U+30AD     │KANA LETTER KI                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04B8    │U+30AF     │KANA LETTER KU                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04B9    │U+30B1     │KANA LETTER KE                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04BA    │U+30B3     │KANA LETTER KO                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04BB    │U+30B5     │KANA LETTER SA                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04BC    │U+30B7     │KANA LETTER SHI                             │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04BD    │U+30B9     │KANA LETTER SU                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04BE    │U+30BB     │KANA LETTER SE                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04BF    │U+30BD     │KANA LETTER SO                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04C0    │U+30BF     │KANA LETTER TA                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04C1    │U+30C1     │KANA LETTER CHI                             │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04C2    │U+30C4     │KANA LETTER TSU                             │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04C3    │U+30C6     │KANA LETTER TE                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04C4    │U+30C8     │KANA LETTER TO                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04C5    │U+30CA     │KANA LETTER NA                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04C6    │U+30CB     │KANA LETTER NI                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04C7    │U+30CC     │KANA LETTER NU                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04C8    │U+30CD     │KANA LETTER NE                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04C9    │U+30CE     │KANA LETTER NO                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04CA    │U+30CF     │KANA LETTER HA                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04CB    │U+30D2     │KANA LETTER HI                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04CC    │U+30D5     │KANA LETTER FU                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04CD    │U+30D8     │KANA LETTER HE                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04CE    │U+30DB     │KANA LETTER HO                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04CF    │U+30DE     │KANA LETTER MA                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04D0    │U+30DF     │KANA LETTER MI                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04D1    │U+30E0     │KANA LETTER MU                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04D2    │U+30E1     │KANA LETTER ME                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04D3    │U+30E2     │KANA LETTER MO                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04D4    │U+30E4     │KANA LETTER YA                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04D5    │U+30E6     │KANA LETTER YU                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04D6    │U+30E8     │KANA LETTER YO                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04D7    │U+30E9     │KANA LETTER RA                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04D8    │U+30EA     │KANA LETTER RI                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04D9    │U+30EB     │KANA LETTER RU                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04DA    │U+30EC     │KANA LETTER RE                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04DB    │U+30ED     │KANA LETTER RO                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04DC    │U+30EF     │KANA LETTER WA                              │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04DD    │U+30F3     │KANA LETTER N                               │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04DE    │U+309B     │VOICED SOUND SYMBOL                         │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x04DF    │U+309C     │SEMIVOICED SOUND SYMBOL                     │Kana     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05AC    │U+060C     │ARABIC COMMA                                │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05BB    │U+061B     │ARABIC SEMICOLON                            │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05BF    │U+061F     │ARABIC QUESTION MARK                        │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05C1    │U+0621     │ARABIC LETTER HAMZA                         │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05C2    │U+0622     │ARABIC LETTER ALEF WITH MADDA ABOVE         │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05C3    │U+0623     │ARABIC LETTER ALEF WITH HAMZA ABOVE         │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05C4    │U+0624     │ARABIC LETTER WAW WITH HAMZA ABOVE          │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05C5    │U+0625     │ARABIC LETTER ALEF WITH HAMZA BELOW         │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05C6    │U+0626     │ARABIC LETTER YEH WITH HAMZA ABOVE          │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05C7    │U+0627     │ARABIC LETTER ALEF                          │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05C8    │U+0628     │ARABIC LETTER BEH                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05C9    │U+0629     │ARABIC LETTER TEH MARBUTA                   │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05CA    │U+062A     │ARABIC LETTER TEH                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05CB    │U+062B     │ARABIC LETTER THEH                          │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05CC    │U+062C     │ARABIC LETTER JEEM                          │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05CD    │U+062D     │ARABIC LETTER HAH                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05CE    │U+062E     │ARABIC LETTER KHAH                          │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05CF    │U+062F     │ARABIC LETTER DAL                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05D0    │U+0630     │ARABIC LETTER THAL                          │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05D1    │U+0631     │ARABIC LETTER REH                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05D2    │U+0632     │ARABIC LETTER ZAIN                          │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05D3    │U+0633     │ARABIC LETTER SEEN                          │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05D4    │U+0634     │ARABIC LETTER SHEEN                         │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05D5    │U+0635     │ARABIC LETTER SAD                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05D6    │U+0636     │ARABIC LETTER DAD                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05D7    │U+0637     │ARABIC LETTER TAH                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05D8    │U+0638     │ARABIC LETTER ZAH                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05D9    │U+0639     │ARABIC LETTER AIN                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05DA    │U+063A     │ARABIC LETTER GHAIN                         │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05E0    │U+0640     │ARABIC TATWEEL                              │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05E1    │U+0641     │ARABIC LETTER FEH                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05E2    │U+0642     │ARABIC LETTER QAF                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05E3    │U+0643     │ARABIC LETTER KAF                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05E4    │U+0644     │ARABIC LETTER LAM                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05E5    │U+0645     │ARABIC LETTER MEEM                          │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05E6    │U+0646     │ARABIC LETTER NOON                          │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05E7    │U+0647     │ARABIC LETTER HEH                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05E8    │U+0648     │ARABIC LETTER WAW                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05E9    │U+0649     │ARABIC LETTER ALEF MAKSURA                  │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05EA    │U+064A     │ARABIC LETTER YEH                           │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05EB    │U+064B     │ARABIC FATHATAN                             │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05EC    │U+064C     │ARABIC DAMMATAN                             │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05ED    │U+064D     │ARABIC KASRATAN                             │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05EE    │U+064E     │ARABIC FATHA                                │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05EF    │U+064F     │ARABIC DAMMA                                │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05F0    │U+0650     │ARABIC KASRA                                │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05F1    │U+0651     │ARABIC SHADDA                               │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x05F2    │U+0652     │ARABIC SUKUN                                │Arabic   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06A1    │U+0452     │CYRILLIC SMALL LETTER DJE                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06A2    │U+0453     │CYRILLIC SMALL LETTER GJE                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06A3    │U+0451     │CYRILLIC SMALL LETTER IO                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06A4    │U+0454     │CYRILLIC SMALL LETTER UKRAINIAN IE          │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06A5    │U+0455     │CYRILLIC SMALL LETTER DZE                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06A6    │U+0456     │CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN│Cyrillic │
│          │           │I                                           │         │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06A7    │U+0457     │CYRILLIC SMALL LETTER YI                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06A8    │U+0458     │CYRILLIC SMALL LETTER JE                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06A9    │U+0459     │CYRILLIC SMALL LETTER LJE                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06AA    │U+045A     │CYRILLIC SMALL LETTER NJE                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06AB    │U+045B     │CYRILLIC SMALL LETTER TSHE                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06AC    │U+045C     │CYRILLIC SMALL LETTER KJE                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06AD    │U+0491     │CYRILLIC SMALL LETTER GHE WITH UPTURN       │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06AE    │U+045E     │CYRILLIC SMALL LETTER SHORT U               │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06AF    │U+045F     │CYRILLIC SMALL LETTER DZHE                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06B0    │U+2116     │NUMERO SIGN                                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06B1    │U+0402     │CYRILLIC CAPITAL LETTER DJE                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06B2    │U+0403     │CYRILLIC CAPITAL LETTER GJE                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06B3    │U+0401     │CYRILLIC CAPITAL LETTER IO                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06B4    │U+0404     │CYRILLIC CAPITAL LETTER UKRAINIAN IE        │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06B5    │U+0405     │CYRILLIC CAPITAL LETTER DZE                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06B6    │U+0406     │CYRILLIC CAPITAL LETTER                     │Cyrillic │
│          │           │BYELORUSSIAN-UKRAINIAN I                    │         │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06B7    │U+0407     │CYRILLIC CAPITAL LETTER YI                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06B8    │U+0408     │CYRILLIC CAPITAL LETTER JE                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06B9    │U+0409     │CYRILLIC CAPITAL LETTER LJE                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06BA    │U+040A     │CYRILLIC CAPITAL LETTER NJE                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06BB    │U+040B     │CYRILLIC CAPITAL LETTER TSHE                │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06BC    │U+040C     │CYRILLIC CAPITAL LETTER KJE                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06BD    │U+0490     │CYRILLIC CAPITAL LETTER GHE WITH UPTURN     │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06BE    │U+040E     │CYRILLIC CAPITAL LETTER SHORT U             │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06BF    │U+040F     │CYRILLIC CAPITAL LETTER DZHE                │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06C0    │U+044E     │CYRILLIC SMALL LETTER YU                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06C1    │U+0430     │CYRILLIC SMALL LETTER A                     │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06C2    │U+0431     │CYRILLIC SMALL LETTER BE                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06C3    │U+0446     │CYRILLIC SMALL LETTER TSE                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06C4    │U+0434     │CYRILLIC SMALL LETTER DE                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06C5    │U+0435     │CYRILLIC SMALL LETTER IE                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06C6    │U+0444     │CYRILLIC SMALL LETTER EF                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06C7    │U+0433     │CYRILLIC SMALL LETTER GHE                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06C8    │U+0445     │CYRILLIC SMALL LETTER HA                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06C9    │U+0438     │CYRILLIC SMALL LETTER I                     │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06CA    │U+0439     │CYRILLIC SMALL LETTER SHORT I               │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06CB    │U+043A     │CYRILLIC SMALL LETTER KA                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06CC    │U+043B     │CYRILLIC SMALL LETTER EL                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06CD    │U+043C     │CYRILLIC SMALL LETTER EM                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06CE    │U+043D     │CYRILLIC SMALL LETTER EN                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06CF    │U+043E     │CYRILLIC SMALL LETTER O                     │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06D0    │U+043F     │CYRILLIC SMALL LETTER PE                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06D1    │U+044F     │CYRILLIC SMALL LETTER YA                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06D2    │U+0440     │CYRILLIC SMALL LETTER ER                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06D3    │U+0441     │CYRILLIC SMALL LETTER ES                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06D4    │U+0442     │CYRILLIC SMALL LETTER TE                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06D5    │U+0443     │CYRILLIC SMALL LETTER U                     │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06D6    │U+0436     │CYRILLIC SMALL LETTER ZHE                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06D7    │U+0432     │CYRILLIC SMALL LETTER VE                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06D8    │U+044C     │CYRILLIC SMALL LETTER SOFT SIGN             │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06D9    │U+044B     │CYRILLIC SMALL LETTER YERU                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06DA    │U+0437     │CYRILLIC SMALL LETTER ZE                    │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06DB    │U+0448     │CYRILLIC SMALL LETTER SHA                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06DC    │U+044D     │CYRILLIC SMALL LETTER E                     │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06DD    │U+0449     │CYRILLIC SMALL LETTER SHCHA                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06DE    │U+0447     │CYRILLIC SMALL LETTER CHE                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06DF    │U+044A     │CYRILLIC SMALL LETTER HARD SIGN             │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06E0    │U+042E     │CYRILLIC CAPITAL LETTER YU                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06E1    │U+0410     │CYRILLIC CAPITAL LETTER A                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06E2    │U+0411     │CYRILLIC CAPITAL LETTER BE                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06E3    │U+0426     │CYRILLIC CAPITAL LETTER TSE                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06E4    │U+0414     │CYRILLIC CAPITAL LETTER DE                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06E5    │U+0415     │CYRILLIC CAPITAL LETTER IE                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06E6    │U+0424     │CYRILLIC CAPITAL LETTER EF                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06E7    │U+0413     │CYRILLIC CAPITAL LETTER GHE                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06E8    │U+0425     │CYRILLIC CAPITAL LETTER HA                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06E9    │U+0418     │CYRILLIC CAPITAL LETTER I                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06EA    │U+0419     │CYRILLIC CAPITAL LETTER SHORT I             │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06EB    │U+041A     │CYRILLIC CAPITAL LETTER KA                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06EC    │U+041B     │CYRILLIC CAPITAL LETTER EL                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06ED    │U+041C     │CYRILLIC CAPITAL LETTER EM                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06EE    │U+041D     │CYRILLIC CAPITAL LETTER EN                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06EF    │U+041E     │CYRILLIC CAPITAL LETTER O                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06F0    │U+041F     │CYRILLIC CAPITAL LETTER PE                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06F1    │U+042F     │CYRILLIC CAPITAL LETTER YA                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06F2    │U+0420     │CYRILLIC CAPITAL LETTER ER                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06F3    │U+0421     │CYRILLIC CAPITAL LETTER ES                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06F4    │U+0422     │CYRILLIC CAPITAL LETTER TE                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06F5    │U+0423     │CYRILLIC CAPITAL LETTER U                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06F6    │U+0416     │CYRILLIC CAPITAL LETTER ZHE                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06F7    │U+0412     │CYRILLIC CAPITAL LETTER VE                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06F8    │U+042C     │CYRILLIC CAPITAL LETTER SOFT SIGN           │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06F9    │U+042B     │CYRILLIC CAPITAL LETTER YERU                │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06FA    │U+0417     │CYRILLIC CAPITAL LETTER ZE                  │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06FB    │U+0428     │CYRILLIC CAPITAL LETTER SHA                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06FC    │U+042D     │CYRILLIC CAPITAL LETTER E                   │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06FD    │U+0429     │CYRILLIC CAPITAL LETTER SHCHA               │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06FE    │U+0427     │CYRILLIC CAPITAL LETTER CHE                 │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x06FF    │U+042A     │CYRILLIC CAPITAL LETTER HARD SIGN           │Cyrillic │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07A1    │U+0386     │GREEK CAPITAL LETTER ALPHA WITH TONOS       │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07A2    │U+0388     │GREEK CAPITAL LETTER EPSILON WITH TONOS     │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07A3    │U+0389     │GREEK CAPITAL LETTER ETA WITH TONOS         │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07A4    │U+038A     │GREEK CAPITAL LETTER IOTA WITH TONOS        │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07A5    │U+03AA     │GREEK CAPITAL LETTER IOTA WITH DIALYTIKA    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07A7    │U+038C     │GREEK CAPITAL LETTER OMICRON WITH TONOS     │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07A8    │U+038E     │GREEK CAPITAL LETTER UPSILON WITH TONOS     │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07A9    │U+03AB     │GREEK CAPITAL LETTER UPSILON WITH DIALYTIKA │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07AB    │U+038F     │GREEK CAPITAL LETTER OMEGA WITH TONOS       │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07AE    │U+0385     │GREEK DIALYTIKA TONOS                       │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07AF    │U+2015     │HORIZONTAL BAR                              │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07B1    │U+03AC     │GREEK SMALL LETTER ALPHA WITH TONOS         │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07B2    │U+03AD     │GREEK SMALL LETTER EPSILON WITH TONOS       │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07B3    │U+03AE     │GREEK SMALL LETTER ETA WITH TONOS           │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07B4    │U+03AF     │GREEK SMALL LETTER IOTA WITH TONOS          │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07B5    │U+03CA     │GREEK SMALL LETTER IOTA WITH DIALYTIKA      │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07B6    │U+0390     │GREEK SMALL LETTER IOTA WITH DIALYTIKA AND  │Greek    │
│          │           │TONOS                                       │         │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07B7    │U+03CC     │GREEK SMALL LETTER OMICRON WITH TONOS       │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07B8    │U+03CD     │GREEK SMALL LETTER UPSILON WITH TONOS       │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07B9    │U+03CB     │GREEK SMALL LETTER UPSILON WITH DIALYTIKA   │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07BA    │U+03B0     │GREEK SMALL LETTER UPSILON WITH DIALYTIKA   │Greek    │
│          │           │AND TONOS                                   │         │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07BB    │U+03CE     │GREEK SMALL LETTER OMEGA WITH TONOS         │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07C1    │U+0391     │GREEK CAPITAL LETTER ALPHA                  │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07C2    │U+0392     │GREEK CAPITAL LETTER BETA                   │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07C3    │U+0393     │GREEK CAPITAL LETTER GAMMA                  │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07C4    │U+0394     │GREEK CAPITAL LETTER DELTA                  │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07C5    │U+0395     │GREEK CAPITAL LETTER EPSILON                │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07C6    │U+0396     │GREEK CAPITAL LETTER ZETA                   │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07C7    │U+0397     │GREEK CAPITAL LETTER ETA                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07C8    │U+0398     │GREEK CAPITAL LETTER THETA                  │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07C9    │U+0399     │GREEK CAPITAL LETTER IOTA                   │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07CA    │U+039A     │GREEK CAPITAL LETTER KAPPA                  │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07CB    │U+039B     │GREEK CAPITAL LETTER LAMDA                  │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07CC    │U+039C     │GREEK CAPITAL LETTER MU                     │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07CD    │U+039D     │GREEK CAPITAL LETTER NU                     │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07CE    │U+039E     │GREEK CAPITAL LETTER XI                     │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07CF    │U+039F     │GREEK CAPITAL LETTER OMICRON                │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07D0    │U+03A0     │GREEK CAPITAL LETTER PI                     │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07D1    │U+03A1     │GREEK CAPITAL LETTER RHO                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07D2    │U+03A3     │GREEK CAPITAL LETTER SIGMA                  │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07D4    │U+03A4     │GREEK CAPITAL LETTER TAU                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07D5    │U+03A5     │GREEK CAPITAL LETTER UPSILON                │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07D6    │U+03A6     │GREEK CAPITAL LETTER PHI                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07D7    │U+03A7     │GREEK CAPITAL LETTER CHI                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07D8    │U+03A8     │GREEK CAPITAL LETTER PSI                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07D9    │U+03A9     │GREEK CAPITAL LETTER OMEGA                  │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07E1    │U+03B1     │GREEK SMALL LETTER ALPHA                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07E2    │U+03B2     │GREEK SMALL LETTER BETA                     │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07E3    │U+03B3     │GREEK SMALL LETTER GAMMA                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07E4    │U+03B4     │GREEK SMALL LETTER DELTA                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07E5    │U+03B5     │GREEK SMALL LETTER EPSILON                  │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07E6    │U+03B6     │GREEK SMALL LETTER ZETA                     │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07E7    │U+03B7     │GREEK SMALL LETTER ETA                      │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07E8    │U+03B8     │GREEK SMALL LETTER THETA                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07E9    │U+03B9     │GREEK SMALL LETTER IOTA                     │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07EA    │U+03BA     │GREEK SMALL LETTER KAPPA                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07EB    │U+03BB     │GREEK SMALL LETTER LAMDA                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07EC    │U+03BC     │GREEK SMALL LETTER MU                       │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07ED    │U+03BD     │GREEK SMALL LETTER NU                       │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07EE    │U+03BE     │GREEK SMALL LETTER XI                       │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07EF    │U+03BF     │GREEK SMALL LETTER OMICRON                  │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07F0    │U+03C0     │GREEK SMALL LETTER PI                       │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07F1    │U+03C1     │GREEK SMALL LETTER RHO                      │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07F2    │U+03C3     │GREEK SMALL LETTER SIGMA                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07F3    │U+03C2     │GREEK SMALL LETTER FINAL SIGMA              │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07F4    │U+03C4     │GREEK SMALL LETTER TAU                      │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07F5    │U+03C5     │GREEK SMALL LETTER UPSILON                  │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07F6    │U+03C6     │GREEK SMALL LETTER PHI                      │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07F7    │U+03C7     │GREEK SMALL LETTER CHI                      │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07F8    │U+03C8     │GREEK SMALL LETTER PSI                      │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x07F9    │U+03C9     │GREEK SMALL LETTER OMEGA                    │Greek    │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08A1    │U+23B7     │LEFT RADICAL                                │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08A2    │-          │TOP LEFT RADICAL                            │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08A3    │-          │HORIZONTAL CONNECTOR                        │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08A4    │U+2320     │TOP INTEGRAL                                │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08A5    │U+2321     │BOTTOM INTEGRAL                             │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08A6    │-          │VERTICAL CONNECTOR                          │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08A7    │U+23A1     │TOP LEFT SQUARE BRACKET                     │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08A8    │U+23A3     │BOTTOM LEFT SQUARE BRACKET                  │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08A9    │U+23A4     │TOP RIGHT SQUARE BRACKET                    │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08AA    │U+23A6     │BOTTOM RIGHT SQUARE BRACKET                 │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08AB    │U+239B     │TOP LEFT PARENTHESIS                        │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08AC    │U+239D     │BOTTOM LEFT PARENTHESIS                     │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08AD    │U+239E     │TOP RIGHT PARENTHESIS                       │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08AE    │U+23A0     │BOTTOM RIGHT PARENTHESIS                    │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08AF    │U+23A8     │LEFT MIDDLE CURLY BRACE                     │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08B0    │U+23AC     │RIGHT MIDDLE CURLY BRACE                    │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08B1    │-          │TOP LEFT SUMMATION                          │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08B2    │-          │BOTTOM LEFT SUMMATION                       │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08B3    │-          │TOP VERTICAL SUMMATION CONNECTOR            │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08B4    │-          │BOTTOM VERTICAL SUMMATION CONNECTOR         │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08B5    │-          │TOP RIGHT SUMMATION                         │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08B6    │-          │BOTTOM RIGHT SUMMATION                      │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08B7    │-          │RIGHT MIDDLE SUMMATION                      │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08BC    │U+2264     │LESS THAN OR EQUAL SIGN                     │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08BD    │U+2260     │NOT EQUAL SIGN                              │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08BE    │U+2265     │GREATER THAN OR EQUAL SIGN                  │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08BF    │U+222B     │INTEGRAL                                    │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08C0    │U+2234     │THEREFORE                                   │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08C1    │U+221D     │VARIATION, PROPORTIONAL TO                  │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08C2    │U+221E     │INFINITY                                    │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08C5    │U+2207     │NABLA, DEL                                  │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08C8    │U+223C     │IS APPROXIMATE TO                           │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08C9    │U+2243     │SIMILAR OR EQUAL TO                         │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08CD    │U+21D4     │IF AND ONLY IF                              │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08CE    │U+21D2     │IMPLIES                                     │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08CF    │U+2261     │IDENTICAL TO                                │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08D6    │U+221A     │RADICAL                                     │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08DA    │U+2282     │IS INCLUDED IN                              │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08DB    │U+2283     │INCLUDES                                    │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08DC    │U+2229     │INTERSECTION                                │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08DD    │U+222A     │UNION                                       │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08DE    │U+2227     │LOGICAL AND                                 │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08DF    │U+2228     │LOGICAL OR                                  │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08EF    │U+2202     │PARTIAL DERIVATIVE                          │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08F6    │U+0192     │FUNCTION                                    │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08FB    │U+2190     │LEFT ARROW                                  │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08FC    │U+2191     │UPWARD ARROW                                │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08FD    │U+2192     │RIGHT ARROW                                 │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x08FE    │U+2193     │DOWNWARD ARROW                              │Technical│
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09DF    │-          │BLANK                                       │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09E0    │U+25C6     │SOLID DIAMOND                               │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09E1    │U+2592     │CHECKERBOARD                                │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09E2    │U+2409     │"HT"                                        │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09E3    │U+240C     │"FF"                                        │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09E4    │U+240D     │"CR"                                        │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09E5    │U+240A     │"LF"                                        │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09E8    │U+2424     │"NL"                                        │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09E9    │U+240B     │"VT"                                        │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09EA    │U+2518     │LOWER-RIGHT CORNER                          │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09EB    │U+2510     │UPPER-RIGHT CORNER                          │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09EC    │U+250C     │UPPER-LEFT CORNER                           │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09ED    │U+2514     │LOWER-LEFT CORNER                           │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09EE    │U+253C     │CROSSING-LINES                              │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09EF    │U+23BA     │HORIZONTAL LINE, SCAN 1                     │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09F0    │U+23BB     │HORIZONTAL LINE, SCAN 3                     │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09F1    │U+2500     │HORIZONTAL LINE, SCAN 5                     │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09F2    │U+23BC     │HORIZONTAL LINE, SCAN 7                     │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09F3    │U+23BD     │HORIZONTAL LINE, SCAN 9                     │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09F4    │U+251C     │LEFT "T"                                    │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09F5    │U+2524     │RIGHT "T"                                   │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09F6    │U+2534     │BOTTOM "T"                                  │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09F7    │U+252C     │TOP "T"                                     │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x09F8    │U+2502     │VERTICAL BAR                                │Special  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AA1    │U+2003     │EM SPACE                                    │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AA2    │U+2002     │EN SPACE                                    │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AA3    │U+2004     │3/EM SPACE                                  │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AA4    │U+2005     │4/EM SPACE                                  │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AA5    │U+2007     │DIGIT SPACE                                 │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AA6    │U+2008     │PUNCTUATION SPACE                           │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AA7    │U+2009     │THIN SPACE                                  │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AA8    │U+200A     │HAIR SPACE                                  │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AA9    │U+2014     │EM DASH                                     │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AAA    │U+2013     │EN DASH                                     │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AAC    │-          │SIGNIFICANT BLANK SYMBOL                    │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AAE    │U+2026     │ELLIPSIS                                    │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AAF    │U+2025     │DOUBLE BASELINE DOT                         │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AB0    │U+2153     │VULGAR FRACTION ONE THIRD                   │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AB1    │U+2154     │VULGAR FRACTION TWO THIRDS                  │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AB2    │U+2155     │VULGAR FRACTION ONE FIFTH                   │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AB3    │U+2156     │VULGAR FRACTION TWO FIFTHS                  │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AB4    │U+2157     │VULGAR FRACTION THREE FIFTHS                │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AB5    │U+2158     │VULGAR FRACTION FOUR FIFTHS                 │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AB6    │U+2159     │VULGAR FRACTION ONE SIXTH                   │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AB7    │U+215A     │VULGAR FRACTION FIVE SIXTHS                 │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AB8    │U+2105     │CARE OF                                     │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ABB    │U+2012     │FIGURE DASH                                 │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ABC    │-          │LEFT ANGLE BRACKET                          │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ABD    │-          │DECIMAL POINT                               │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ABE    │-          │RIGHT ANGLE BRACKET                         │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ABF    │-          │MARKER                                      │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AC3    │U+215B     │VULGAR FRACTION ONE EIGHTH                  │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AC4    │U+215C     │VULGAR FRACTION THREE EIGHTHS               │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AC5    │U+215D     │VULGAR FRACTION FIVE EIGHTHS                │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AC6    │U+215E     │VULGAR FRACTION SEVEN EIGHTHS               │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AC9    │U+2122     │TRADEMARK SIGN                              │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ACA    │-          │SIGNATURE MARK                              │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ACB    │-          │TRADEMARK SIGN IN CIRCLE                    │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ACC    │-          │LEFT OPEN TRIANGLE                          │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ACD    │-          │RIGHT OPEN TRIANGLE                         │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ACE    │-          │EM OPEN CIRCLE                              │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ACF    │-          │EM OPEN RECTANGLE                           │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AD0    │U+2018     │LEFT SINGLE QUOTATION MARK                  │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AD1    │U+2019     │RIGHT SINGLE QUOTATION MARK                 │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AD2    │U+201C     │LEFT DOUBLE QUOTATION MARK                  │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AD3    │U+201D     │RIGHT DOUBLE QUOTATION MARK                 │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AD4    │U+211E     │PRESCRIPTION, TAKE, RECIPE                  │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AD5    │U+2030     │PER MILLE SIGN                              │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AD6    │U+2032     │MINUTES                                     │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AD7    │U+2033     │SECONDS                                     │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AD9    │U+271D     │LATIN CROSS                                 │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ADA    │-          │HEXAGRAM                                    │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ADB    │-          │FILLED RECTANGLE BULLET                     │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ADC    │-          │FILLED LEFT TRIANGLE BULLET                 │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ADD    │-          │FILLED RIGHT TRIANGLE BULLET                │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ADE    │-          │EM FILLED CIRCLE                            │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ADF    │-          │EM FILLED RECTANGLE                         │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AE0    │-          │EN OPEN CIRCLE BULLET                       │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AE1    │-          │EN OPEN SQUARE BULLET                       │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AE2    │-          │OPEN RECTANGULAR BULLET                     │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AE3    │-          │OPEN TRIANGULAR BULLET UP                   │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AE4    │-          │OPEN TRIANGULAR BULLET DOWN                 │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AE5    │-          │OPEN STAR                                   │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AE6    │-          │EN FILLED CIRCLE BULLET                     │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AE7    │-          │EN FILLED SQUARE BULLET                     │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AE8    │-          │FILLED TRIANGULAR BULLET UP                 │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AE9    │-          │FILLED TRIANGULAR BULLET DOWN               │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AEA    │-          │LEFT POINTER                                │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AEB    │-          │RIGHT POINTER                               │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AEC    │U+2663     │CLUB                                        │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AED    │U+2666     │DIAMOND                                     │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AEE    │U+2665     │HEART                                       │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AF0    │U+2720     │MALTESE CROSS                               │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AF1    │U+2020     │DAGGER                                      │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AF2    │U+2021     │DOUBLE DAGGER                               │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AF3    │U+2713     │CHECK MARK, TICK                            │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AF4    │U+2717     │BALLOT CROSS                                │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AF5    │U+266F     │MUSICAL SHARP                               │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AF6    │U+266D     │MUSICAL FLAT                                │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AF7    │U+2642     │MALE SYMBOL                                 │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AF8    │U+2640     │FEMALE SYMBOL                               │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AF9    │U+260E     │TELEPHONE SYMBOL                            │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AFA    │U+2315     │TELEPHONE RECORDER SYMBOL                   │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AFB    │U+2117     │PHONOGRAPH COPYRIGHT SIGN                   │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AFC    │U+2038     │CARET                                       │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AFD    │U+201A     │SINGLE LOW QUOTATION MARK                   │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AFE    │U+201E     │DOUBLE LOW QUOTATION MARK                   │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0AFF    │-          │CURSOR                                      │Publish  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BA3    │-          │LEFT CARET                                  │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BA6    │-          │RIGHT CARET                                 │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BA8    │-          │DOWN CARET                                  │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BA9    │-          │UP CARET                                    │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BC0    │-          │OVERBAR                                     │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BC2    │U+22A5     │DOWN TACK                                   │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BC3    │-          │UP SHOE (CAP)                               │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BC4    │U+230A     │DOWN STILE                                  │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BC6    │-          │UNDERBAR                                    │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BCA    │U+2218     │JOT                                         │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BCC    │U+2395     │QUAD                                        │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BCE    │U+22A4     │UP TACK                                     │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BCF    │U+25CB     │CIRCLE                                      │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BD3    │U+2308     │UP STILE                                    │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BD6    │-          │DOWN SHOE (CUP)                             │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BD8    │-          │RIGHT SHOE                                  │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BDA    │-          │LEFT SHOE                                   │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BDC    │U+22A2     │LEFT TACK                                   │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0BFC    │U+22A3     │RIGHT TACK                                  │APL      │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CDF    │U+2017     │DOUBLE LOW LINE                             │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CE0    │U+05D0     │HEBREW LETTER ALEF                          │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CE1    │U+05D1     │HEBREW LETTER BET                           │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CE2    │U+05D2     │HEBREW LETTER GIMEL                         │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CE3    │U+05D3     │HEBREW LETTER DALET                         │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CE4    │U+05D4     │HEBREW LETTER HE                            │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CE5    │U+05D5     │HEBREW LETTER VAV                           │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CE6    │U+05D6     │HEBREW LETTER ZAYIN                         │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CE7    │U+05D7     │HEBREW LETTER HET                           │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CE8    │U+05D8     │HEBREW LETTER TET                           │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CE9    │U+05D9     │HEBREW LETTER YOD                           │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CEA    │U+05DA     │HEBREW LETTER FINAL KAF                     │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CEB    │U+05DB     │HEBREW LETTER KAF                           │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CEC    │U+05DC     │HEBREW LETTER LAMED                         │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CED    │U+05DD     │HEBREW LETTER FINAL MEM                     │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CEE    │U+05DE     │HEBREW LETTER MEM                           │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CEF    │U+05DF     │HEBREW LETTER FINAL NUN                     │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CF0    │U+05E0     │HEBREW LETTER NUN                           │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CF1    │U+05E1     │HEBREW LETTER SAMEKH                        │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CF2    │U+05E2     │HEBREW LETTER AYIN                          │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CF3    │U+05E3     │HEBREW LETTER FINAL PE                      │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CF4    │U+05E4     │HEBREW LETTER PE                            │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CF5    │U+05E5     │HEBREW LETTER FINAL TSADI                   │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CF6    │U+05E6     │HEBREW LETTER TSADI                         │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CF7    │U+05E7     │HEBREW LETTER QOF                           │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CF8    │U+05E8     │HEBREW LETTER RESH                          │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CF9    │U+05E9     │HEBREW LETTER SHIN                          │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0CFA    │U+05EA     │HEBREW LETTER TAV                           │Hebrew   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DA1    │U+0E01     │THAI CHARACTER KO KAI                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DA2    │U+0E02     │THAI CHARACTER KHO KHAI                     │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DA3    │U+0E03     │THAI CHARACTER KHO KHUAT                    │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DA4    │U+0E04     │THAI CHARACTER KHO KHWAI                    │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DA5    │U+0E05     │THAI CHARACTER KHO KHON                     │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DA6    │U+0E06     │THAI CHARACTER KHO RAKHANG                  │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DA7    │U+0E07     │THAI CHARACTER NGO NGU                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DA8    │U+0E08     │THAI CHARACTER CHO CHAN                     │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DA9    │U+0E09     │THAI CHARACTER CHO CHING                    │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DAA    │U+0E0A     │THAI CHARACTER CHO CHANG                    │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DAB    │U+0E0B     │THAI CHARACTER SO SO                        │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DAC    │U+0E0C     │THAI CHARACTER CHO CHOE                     │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DAD    │U+0E0D     │THAI CHARACTER YO YING                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DAE    │U+0E0E     │THAI CHARACTER DO CHADA                     │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DAF    │U+0E0F     │THAI CHARACTER TO PATAK                     │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DB0    │U+0E10     │THAI CHARACTER THO THAN                     │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DB1    │U+0E11     │THAI CHARACTER THO NANGMONTHO               │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DB2    │U+0E12     │THAI CHARACTER THO PHUTHAO                  │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DB3    │U+0E13     │THAI CHARACTER NO NEN                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DB4    │U+0E14     │THAI CHARACTER DO DEK                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DB5    │U+0E15     │THAI CHARACTER TO TAO                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DB6    │U+0E16     │THAI CHARACTER THO THUNG                    │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DB7    │U+0E17     │THAI CHARACTER THO THAHAN                   │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DB8    │U+0E18     │THAI CHARACTER THO THONG                    │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DB9    │U+0E19     │THAI CHARACTER NO NU                        │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DBA    │U+0E1A     │THAI CHARACTER BO BAIMAI                    │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DBB    │U+0E1B     │THAI CHARACTER PO PLA                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DBC    │U+0E1C     │THAI CHARACTER PHO PHUNG                    │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DBD    │U+0E1D     │THAI CHARACTER FO FA                        │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DBE    │U+0E1E     │THAI CHARACTER PHO PHAN                     │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DBF    │U+0E1F     │THAI CHARACTER FO FAN                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DC0    │U+0E20     │THAI CHARACTER PHO SAMPHAO                  │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DC1    │U+0E21     │THAI CHARACTER MO MA                        │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DC2    │U+0E22     │THAI CHARACTER YO YAK                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DC3    │U+0E23     │THAI CHARACTER RO RUA                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DC4    │U+0E24     │THAI CHARACTER RU                           │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DC5    │U+0E25     │THAI CHARACTER LO LING                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DC6    │U+0E26     │THAI CHARACTER LU                           │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DC7    │U+0E27     │THAI CHARACTER WO WAEN                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DC8    │U+0E28     │THAI CHARACTER SO SALA                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DC9    │U+0E29     │THAI CHARACTER SO RUSI                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DCA    │U+0E2A     │THAI CHARACTER SO SUA                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DCB    │U+0E2B     │THAI CHARACTER HO HIP                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DCC    │U+0E2C     │THAI CHARACTER LO CHULA                     │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DCD    │U+0E2D     │THAI CHARACTER O ANG                        │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DCE    │U+0E2E     │THAI CHARACTER HO NOKHUK                    │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DCF    │U+0E2F     │THAI CHARACTER PAIYANNOI                    │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DD0    │U+0E30     │THAI CHARACTER SARA A                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DD1    │U+0E31     │THAI CHARACTER MAI HAN-AKAT                 │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DD2    │U+0E32     │THAI CHARACTER SARA AA                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DD3    │U+0E33     │THAI CHARACTER SARA AM                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DD4    │U+0E34     │THAI CHARACTER SARA I                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DD5    │U+0E35     │THAI CHARACTER SARA II                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DD6    │U+0E36     │THAI CHARACTER SARA UE                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DD7    │U+0E37     │THAI CHARACTER SARA UEE                     │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DD8    │U+0E38     │THAI CHARACTER SARA U                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DD9    │U+0E39     │THAI CHARACTER SARA UU                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DDA    │U+0E3A     │THAI CHARACTER PHINTHU                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DDF    │U+0E3F     │THAI CURRENCY SYMBOL BAHT                   │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DE0    │U+0E40     │THAI CHARACTER SARA E                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DE1    │U+0E41     │THAI CHARACTER SARA AE                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DE2    │U+0E42     │THAI CHARACTER SARA O                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DE3    │U+0E43     │THAI CHARACTER SARA AI MAIMUAN              │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DE4    │U+0E44     │THAI CHARACTER SARA AI MAIMALAI             │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DE5    │U+0E45     │THAI CHARACTER LAKKHANGYAO                  │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DE6    │U+0E46     │THAI CHARACTER MAIYAMOK                     │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DE7    │U+0E47     │THAI CHARACTER MAITAIKHU                    │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DE8    │U+0E48     │THAI CHARACTER MAI EK                       │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DE9    │U+0E49     │THAI CHARACTER MAI THO                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DEA    │U+0E4A     │THAI CHARACTER MAI TRI                      │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DEB    │U+0E4B     │THAI CHARACTER MAI CHATTAWA                 │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DEC    │U+0E4C     │THAI CHARACTER THANTHAKHAT                  │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DED    │U+0E4D     │THAI CHARACTER NIKHAHIT                     │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DF0    │U+0E50     │THAI DIGIT ZERO                             │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DF1    │U+0E51     │THAI DIGIT ONE                              │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DF2    │U+0E52     │THAI DIGIT TWO                              │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DF3    │U+0E53     │THAI DIGIT THREE                            │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DF4    │U+0E54     │THAI DIGIT FOUR                             │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DF5    │U+0E55     │THAI DIGIT FIVE                             │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DF6    │U+0E56     │THAI DIGIT SIX                              │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DF7    │U+0E57     │THAI DIGIT SEVEN                            │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DF8    │U+0E58     │THAI DIGIT EIGHT                            │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0DF9    │U+0E59     │THAI DIGIT NINE                             │Thai     │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EA1    │-          │HANGUL KIYEOG                               │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EA2    │-          │HANGUL SSANG KIYEOG                         │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EA3    │-          │HANGUL KIYEOG SIOS                          │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EA4    │-          │HANGUL NIEUN                                │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EA5    │-          │HANGUL NIEUN JIEUJ                          │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EA6    │-          │HANGUL NIEUN HIEUH                          │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EA7    │-          │HANGUL DIKEUD                               │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EA8    │-          │HANGUL SSANG DIKEUD                         │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EA9    │-          │HANGUL RIEUL                                │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EAA    │-          │HANGUL RIEUL KIYEOG                         │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EAB    │-          │HANGUL RIEUL MIEUM                          │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EAC    │-          │HANGUL RIEUL PIEUB                          │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EAD    │-          │HANGUL RIEUL SIOS                           │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EAE    │-          │HANGUL RIEUL TIEUT                          │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EAF    │-          │HANGUL RIEUL PHIEUF                         │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EB0    │-          │HANGUL RIEUL HIEUH                          │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EB1    │-          │HANGUL MIEUM                                │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EB2    │-          │HANGUL PIEUB                                │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EB3    │-          │HANGUL SSANG PIEUB                          │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EB4    │-          │HANGUL PIEUB SIOS                           │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EB5    │-          │HANGUL SIOS                                 │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EB6    │-          │HANGUL SSANG SIOS                           │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EB7    │-          │HANGUL IEUNG                                │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EB8    │-          │HANGUL JIEUJ                                │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EB9    │-          │HANGUL SSANG JIEUJ                          │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EBA    │-          │HANGUL CIEUC                                │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EBB    │-          │HANGUL KHIEUQ                               │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EBC    │-          │HANGUL TIEUT                                │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EBD    │-          │HANGUL PHIEUF                               │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EBE    │-          │HANGUL HIEUH                                │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EBF    │-          │HANGUL A                                    │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EC0    │-          │HANGUL AE                                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EC1    │-          │HANGUL YA                                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EC2    │-          │HANGUL YAE                                  │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EC3    │-          │HANGUL EO                                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EC4    │-          │HANGUL E                                    │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EC5    │-          │HANGUL YEO                                  │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EC6    │-          │HANGUL YE                                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EC7    │-          │HANGUL O                                    │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EC8    │-          │HANGUL WA                                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EC9    │-          │HANGUL WAE                                  │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ECA    │-          │HANGUL OE                                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ECB    │-          │HANGUL YO                                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ECC    │-          │HANGUL U                                    │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ECD    │-          │HANGUL WEO                                  │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ECE    │-          │HANGUL WE                                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ECF    │-          │HANGUL WI                                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ED0    │-          │HANGUL YU                                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ED1    │-          │HANGUL EU                                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ED2    │-          │HANGUL YI                                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ED3    │-          │HANGUL I                                    │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ED4    │-          │HANGUL JONG SEONG KIYEOG                    │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ED5    │-          │HANGUL JONG SEONG SSANG KIYEOG              │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ED6    │-          │HANGUL JONG SEONG KIYEOG SIOS               │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ED7    │-          │HANGUL JONG SEONG NIEUN                     │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ED8    │-          │HANGUL JONG SEONG NIEUN JIEUJ               │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0ED9    │-          │HANGUL JONG SEONG NIEUN HIEUH               │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EDA    │-          │HANGUL JONG SEONG DIKEUD                    │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EDB    │-          │HANGUL JONG SEONG RIEUL                     │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EDC    │-          │HANGUL JONG SEONG RIEUL KIYEOG              │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EDD    │-          │HANGUL JONG SEONG RIEUL MIEUM               │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EDE    │-          │HANGUL JONG SEONG RIEUL PIEUB               │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EDF    │-          │HANGUL JONG SEONG RIEUL SIOS                │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EE0    │-          │HANGUL JONG SEONG RIEUL TIEUT               │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EE1    │-          │HANGUL JONG SEONG RIEUL PHIEUF              │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EE2    │-          │HANGUL JONG SEONG RIEUL HIEUH               │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EE3    │-          │HANGUL JONG SEONG MIEUM                     │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EE4    │-          │HANGUL JONG SEONG PIEUB                     │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EE5    │-          │HANGUL JONG SEONG PIEUB SIOS                │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EE6    │-          │HANGUL JONG SEONG SIOS                      │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EE7    │-          │HANGUL JONG SEONG SSANG SIOS                │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EE8    │-          │HANGUL JONG SEONG IEUNG                     │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EE9    │-          │HANGUL JONG SEONG JIEUJ                     │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EEA    │-          │HANGUL JONG SEONG CIEUC                     │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EEB    │-          │HANGUL JONG SEONG KHIEUQ                    │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EEC    │-          │HANGUL JONG SEONG TIEUT                     │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EED    │-          │HANGUL JONG SEONG PHIEUF                    │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EEE    │-          │HANGUL JONG SEONG HIEUH                     │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EEF    │-          │HANGUL RIEUL YEORIN HIEUH                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EF0    │-          │HANGUL SUNKYEONGEUM MIEUM                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EF1    │-          │HANGUL SUNKYEONGEUM PIEUB                   │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EF2    │-          │HANGUL PAN SIOS                             │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EF3    │-          │HANGUL KKOGJI DALRIN IEUNG                  │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EF4    │-          │HANGUL SUNKYEONGEUM PHIEUF                  │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EF5    │-          │HANGUL YEORIN HIEUH                         │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EF6    │-          │HANGUL ARAE A                               │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EF7    │-          │HANGUL ARAE AE                              │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EF8    │-          │HANGUL JONG SEONG PAN SIOS                  │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EF9    │-          │HANGUL JONG SEONG KKOGJI DALRIN IEUNG       │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EFA    │-          │HANGUL JONG SEONG YEORIN HIEUH              │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x0EFF    │-          │KOREAN WON                                  │Korean   │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x13BC    │U+0152     │LATIN CAPITAL LIGATURE OE                   │Latin-9  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x13BD    │U+0153     │LATIN SMALL LIGATURE OE                     │Latin-9  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x13BE    │U+0178     │LATIN CAPITAL LETTER Y WITH DIAERESIS       │Latin-9  │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20A0    │-          │CURRENCY ECU SIGN                           │Currency │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20A1    │-          │CURRENCY COLON SIGN                         │Currency │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20A2    │-          │CURRENCY CRUZEIRO SIGN                      │Currency │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20A3    │-          │CURRENCY FRENCH FRANC SIGN                  │Currency │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20A4    │-          │CURRENCY LIRA SIGN                          │Currency │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20A5    │-          │CURRENCY MILL SIGN                          │Currency │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20A6    │-          │CURRENCY NAIRA SIGN                         │Currency │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20A7    │-          │CURRENCY PESETA SIGN                        │Currency │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20A8    │-          │CURRENCY RUPEE SIGN                         │Currency │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20A9    │-          │CURRENCY WON SIGN                           │Currency │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20AA    │-          │CURRENCY NEW SHEQEL SIGN                    │Currency │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20AB    │-          │CURRENCY DONG SIGN                          │Currency │
├──────────┼───────────┼────────────────────────────────────────────┼─────────┤
│#x20AC    │U+20AC     │CURRENCY EURO SIGN                          │Currency │
└──────────┴───────────┴────────────────────────────────────────────┴─────────┘

Appendix B. Protocol Encoding

Table of Contents

Syntactic Conventions
Common Types
Errors
Keyboards
Pointers
Predefined Atoms
Connection Setup
Requests
Events

Syntactic Conventions

All numbers are in decimal, unless prefixed with #x, in which case they are in
hexadecimal (base 16).

The general syntax used to describe requests, replies, errors, events, and
compound types is:

   NameofThing
   encode-form
   ...
   encode-form

Each encode-form describes a single component.

For components described in the protocol as:

   name: TYPE

the encode-form is:

   N     TYPE     name

N is the number of bytes occupied in the data stream, and TYPE is the
interpretation of those bytes. For example,

   depth: CARD8

becomes:

   1     CARD8     depth

For components with a static numeric value the encode-form is:

   N     value     name

The value is always interpreted as an N-byte unsigned integer. For example, the
first two bytes of a Window error are always zero (indicating an error in
general) and three (indicating the Window error in particular):

   1      0      Error
   1      3      code

For components described in the protocol as:

name: { Name1,..., NameI}

the encode-form is:

   N          name
        value1 Name1
        ...
        valueI NameI

The value is always interpreted as an N-byte unsigned integer. Note that the
size of N is sometimes larger than that strictly required to encode the values.
For example:

class: { InputOutput, InputOnly, CopyFromParent }

becomes:

2               class
     0     CopyFromParent
     1     InputOutput
     2     InputOnly

For components described in the protocol as:

NAME: TYPE or Alternative1 ...or AlternativeI

the encode-form is:

N     TYPE               NAME
     value1     Alternative1
     ...
     valueI     AlternativeI

The alternative values are guaranteed not to conflict with the encoding of
TYPE. For example:

destination: WINDOW or PointerWindow or InputFocus

becomes:

4     WINDOW          destination
     0     PointerWindow
     1     InputFocus

For components described in the protocol as:

   value-mask: BITMASK

the encode-form is:

N     BITMASK               value-mask
     mask1     mask-name1
     ...
     maskI     mask-nameI

The individual bits in the mask are specified and named, and N is 2 or 4. The
most-significant bit in a BITMASK is reserved for use in defining chained
(multiword) bitmasks, as extensions augment existing core requests. The precise
interpretation of this bit is not yet defined here, although a probable
mechanism is that a 1-bit indicates that another N bytes of bitmask follows,
with bits within the overall mask still interpreted from least-significant to
most-significant with an N-byte unit, with N-byte units interpreted in stream
order, and with the overall mask being byte-swapped in individual N-byte units.

For LISTofVALUE encodings, the request is followed by a section of the form:

   VALUEs
   encode-form
   ...
   encode-form

listing an encode-form for each VALUE. The NAME in each encode-form keys to the
corresponding BITMASK bit. The encoding of a VALUE always occupies four bytes,
but the number of bytes specified in the encoding-form indicates how many of
the least-significant bytes are actually used; the remaining bytes are unused
and their values do not matter.

In various cases, the number of bytes occupied by a component will be specified
by a lowercase single-letter variable name instead of a specific numeric value,
and often some other component will have its value specified as a simple
numeric expression involving these variables. Components specified with such
expressions are always interpreted as unsigned integers. The scope of such
variables is always just the enclosing request, reply, error, event, or
compound type structure. For example:

2      3+n                  request length
4n     LISTofPOINT          points

For unused bytes (the values of the bytes are undefined and do no matter), the
encode-form is:

   N               unused

If the number of unused bytes is variable, the encode-form typically is:

   p               unused, p=pad(E)

where E is some expression, and pad(E) is the number of bytes needed to round E
up to a multiple of four.

   pad(E) = (4 - (E mod 4)) mod 4

Common Types

          In this document the LISTof notation strictly means some number of
LISTofFOO repetitions of the FOO encoding; the actual length of the list is
          encoded elsewhere.

SETofFOO  A set is always represented by a bitmask, with a 1-bit indicating
          presence in the set.

BITMASK: CARD32
WINDOW: CARD32
PIXMAP: CARD32
CURSOR: CARD32
FONT: CARD32
GCONTEXT: CARD32
COLORMAP: CARD32
DRAWABLE: CARD32
FONTABLE: CARD32
ATOM: CARD32
VISUALID: CARD32
BYTE: 8-bit value
INT8: 8-bit signed integer
INT16: 16-bit signed integer
INT32: 32-bit signed integer
CARD8: 8-bit unsigned integer
CARD16: 16-bit unsigned integer
CARD32: 32-bit unsigned integer
TIMESTAMP: CARD32

BITGRAVITY
     0     Forget
     1     NorthWest
     2     North
     3     NorthEast
     4     West
     5     Center
     6     East
     7     SouthWest
     8     South
     9     SouthEast
     10     Static

WINGRAVITY
     0     Unmap
     1     NorthWest
     2     North
     3     NorthEast
     4     West
     5     Center
     6     East
     7     SouthWest
     8     South
     9     SouthEast
     10     Static

BOOL
     0     False
     1     True

SETofEVENT
     #x00000001     KeyPress
     #x00000002     KeyRelease
     #x00000004     ButtonPress
     #x00000008     ButtonRelease
     #x00000010     EnterWindow
     #x00000020     LeaveWindow
     #x00000040     PointerMotion
     #x00000080     PointerMotionHint
     #x00000100     Button1Motion
     #x00000200     Button2Motion
     #x00000400     Button3Motion
     #x00000800     Button4Motion
     #x00001000     Button5Motion
     #x00002000     ButtonMotion
     #x00004000     KeymapState
     #x00008000     Exposure
     #x00010000     VisibilityChange
     #x00020000     StructureNotify
     #x00040000     ResizeRedirect
     #x00080000     SubstructureNotify
     #x00100000     SubstructureRedirect
     #x00200000     FocusChange
     #x00400000     PropertyChange
     #x00800000     ColormapChange
     #x01000000     OwnerGrabButton
     #xFE000000     unused but must be zero

SETofPOINTEREVENT
     encodings are the same as for SETofEVENT, except with
     #xFFFF8003     unused but must be zero

SETofDEVICEEVENT
     encodings are the same as for SETofEVENT, except with
     #xFFFFC0B0     unused but must be zero

KEYSYM: CARD32
KEYCODE: CARD8
BUTTON: CARD8

SETofKEYBUTMASK
     #x0001     Shift
     #x0002     Lock
     #x0004     Control
     #x0008     Mod1
     #x0010     Mod2
     #x0020     Mod3
     #x0040     Mod4
     #x0080     Mod5
     #x0100     Button1
     #x0200     Button2
     #x0400     Button3
     #x0800     Button4
     #x1000     Button5
     #xE000     unused but must be zero

SETofKEYMASK
     encodings are the same as for SETofKEYBUTMASK, except with
     #xFF00          unused but must be zero
STRING8: LISTofCARD8
STRING16: LISTofCHAR2B

CHAR2B
     1     CARD8     byte1
     1     CARD8     byte2

POINT
     2     INT16     x
     2     INT16     y

RECTANGLE
     2     INT16     x
     2     INT16     y
     2     CARD16    width
     2     CARD16    height

ARC
     2     INT16     x
     2     INT16     y
     2     CARD16    width
     2     CARD16    height
     2     INT16     angle1
     2     INT16     angle2

HOST
     1                         family
           0         Internet
           1         DECnet
           2         Chaos
           5         ServerInterpreted
           6         InternetV6
     1                         unused
     2      n                  length of address
     n      LISTofBYTE         address
     p                         unused, p=pad(n)

STR
     1      n                  length of name in bytes
     n      STRING8            name


Errors

Request
     1     0                               Error
     1     1                               code
     2     CARD16                          sequence number
     4                                     unused
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Value
     1     0                               Error
     1     2                               code
     2     CARD16                          sequence number
     4     <32-bits>                 bad value
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Window
     1     0                               Error
     1     3                               code
     2     CARD16                          sequence number
     4     CARD32                          bad resource id
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Pixmap
     1     0                               Error
     1     4                               code
     2     CARD16                          sequence number
     4     CARD32                          bad resource id
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Atom
     1     0                               Error
     1     5                               code
     2     CARD16                          sequence number
     4     CARD32                          bad atom id
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Cursor
     1     0                               Error
     1     6                               code
     2     CARD16                          sequence number
     4     CARD32                          bad resource id
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Font
     1     0                               Error
     1     7                               code
     2     CARD16                          sequence number
     4     CARD32                          bad resource id
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Match
     1     0                               Error
     1     8                               code
     2     CARD16                          sequence number
     4                                     unused
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Drawable
     1     0                               Error
     1     9                               code
     2     CARD16                          sequence number
     4     CARD32                          bad resource id
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Access
     1     0                               Error
     1     10                              code
     2     CARD16                          sequence number
     4                                     unused
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Alloc
     1     0                               Error
     1     11                              code
     2     CARD16                          sequence number
     4                                     unused
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Colormap
     1     0                               Error
     1     12                              code
     2     CARD16                          sequence number
     4     CARD32                          bad resource id
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

GContext
     1     0                               Error
     1     13                              code
     2     CARD16                          sequence number
     4     CARD32                          bad resource id
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

IDChoice
     1     0                               Error
     1     14                              code
     2     CARD16                          sequence number
     4     CARD32                          bad resource id
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Name
     1     0                               Error
     1     15                              code
     2     CARD16                          sequence number
     4                                     unused
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Length
     1     0                               Error
     1     16                              code
     2     CARD16                          sequence number
     4                                     unused
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Implementation
     1     0                               Error
     1     17                              code
     2     CARD16                          sequence number
     4                                     unused
     2     CARD16                          minor opcode
     1     CARD8                           major opcode
     21                                    unused

Keyboards

KEYCODE values are always greater than 7 (and less than 256).

KEYSYM values with the bit #x10000000 set are reserved as vendor-specific.

The names and encodings of the standard KEYSYM values are contained in Appendix
A, Keysym Encoding.

Pointers

BUTTON values are numbered starting with one.

Predefined Atoms

PRIMARY           1      WM_NORMAL_HINTS     40
SECONDARY         2      WM_SIZE_HINTS       41
ARC               3      WM_ZOOM_HINTS       42
ATOM              4      MIN_SPACE           43
BITMAP            5      NORM_SPACE          44
CARDINAL          6      MAX_SPACE           45
COLORMAP          7      END_SPACE           46
CURSOR            8      SUPERSCRIPT_X       47
CUT_BUFFER0       9      SUPERSCRIPT_Y       48
CUT_BUFFER1       10     SUBSCRIPT_X         49
CUT_BUFFER2       11     SUBSCRIPT_Y         50
CUT_BUFFER3       12     UNDERLINE_POSITION  51
CUT_BUFFER4       13     UNDERLINE_THICKNESS 52
CUT_BUFFER5       14     STRIKEOUT_ASCENT    53
CUT_BUFFER6       15     STRIKEOUT_DESCENT   54
CUT_BUFFER7       16     ITALIC_ANGLE        55
DRAWABLE          17     X_HEIGHT            56
FONT              18     QUAD_WIDTH          57
INTEGER           19     WEIGHT              58
PIXMAP            20     POINT_SIZE          59
POINT             21     RESOLUTION          60
RECTANGLE         22     COPYRIGHT           61
RESOURCE_MANAGER  23     NOTICE              62
RGB_COLOR_MAP     24     FONT_NAME           63
RGB_BEST_MAP      25     FAMILY_NAME         64
RGB_BLUE_MAP      26     FULL_NAME           65
RGB_DEFAULT_MAP   27     CAP_HEIGHT          66
RGB_GRAY_MAP      28     WM_CLASS            67
RGB_GREEN_MAP     29     WM_TRANSIENT_FOR    68
RGB_RED_MAP       30
STRING            31
VISUALID          32
WINDOW            33
WM_COMMAND        34
WM_HINTS          35
WM_CLIENT_MACHINE 36
WM_ICON_NAME      37
WM_ICON_SIZE      38
WM_NAME           39

Connection Setup

For TCP connections, displays on a given host are numbered starting from 0, and
the server for display N listens and accepts connections on port 6000 + N. For
DECnet connections, displays on a given host are numbered starting from 0, and
the server for display N listens and accepts connections on the object name
obtained by concatenating "X$X" with the decimal representation of N, for
example, X$X0 and X$X1.

Information sent by the client at connection setup:

     1                       byte-order
          #x42     MSB first
          #x6C     LSB first
     1                       unused
     2     CARD16            protocol-major-version
     2     CARD16            protocol-minor-version
     2     n                 length of authorization-protocol-name
     2     d                 length of authorization-protocol-data
     2                       unused
     n     STRING8           authorization-protocol-name
     p                       unused, p=pad(n)
     d     STRING8           authorization-protocol-data
     q                       unused, q=pad(d)

Except where explicitly noted in the protocol, all 16-bit and 32-bit quantities
sent by the client must be transmitted with the specified byte order, and all
16-bit and 32-bit quantities returned by the server will be transmitted with
this byte order.

Information received by the client if the connection is refused:

     1     0                 Failed
     1     n                 length of reason in bytes
     2     CARD16            protocol-major-version
     2     CARD16            protocol-minor-version
     2     (n+p)/4           length in 4-byte units of "additional data"
     n     STRING8           reason
     p                       unused, p=pad(n)

Information received by the client if further authentication is required:

     1     2                 Authenticate
     5                       unused
     2     (n+p)/4           length in 4-byte units of "additional data"
     n     STRING8           reason
     p                       unused, p=pad(n)

Information received by the client if the connection is accepted:

     1     1                               Success
     1                                     unused
     2     CARD16                          protocol-major-version
     2     CARD16                          protocol-minor-version
     2     8+2n+(v+p+m)/4                  length in 4-byte units of
                                           "additional data"
     4     CARD32                          release-number
     4     CARD32                          resource-id-base
     4     CARD32                          resource-id-mask
     4     CARD32                          motion-buffer-size
     2     v                               length of vendor
     2     CARD16                          maximum-request-length
     1     CARD8                           number of SCREENs in roots
     1     n                               number for FORMATs in
                                           pixmap-formats
     1                                     image-byte-order
          0     LSBFirst
          1     MSBFirst
     1                                     bitmap-format-bit-order
          0     LeastSignificant
          1     MostSignificant
     1     CARD8                           bitmap-format-scanline-unit
     1     CARD8                           bitmap-format-scanline-pad
     1     KEYCODE                         min-keycode
     1     KEYCODE                         max-keycode
     4                                     unused
     v     STRING8                         vendor
     p                                     unused, p=pad(v)
     8n     LISTofFORMAT                   pixmap-formats
     m     LISTofSCREEN                    roots (m is always a multiple of 4)

FORMAT
     1     CARD8                           depth
     1     CARD8                           bits-per-pixel
     1     CARD8                           scanline-pad
     5                                     unused

SCREEN
     4     WINDOW                          root
     4     COLORMAP                        default-colormap
     4     CARD32                          white-pixel
     4     CARD32                          black-pixel
     4     SETofEVENT                      current-input-masks
     2     CARD16                          width-in-pixels
     2     CARD16                          height-in-pixels
     2     CARD16                          width-in-millimeters
     2     CARD16                          height-in-millimeters
     2     CARD16                          min-installed-maps
     2     CARD16                          max-installed-maps
     4     VISUALID                        root-visual
     1                                     backing-stores
          0     Never
          1     WhenMapped
          2     Always
     1     BOOL                            save-unders
     1     CARD8                           root-depth
     1     CARD8                           number of DEPTHs in allowed-depths
     n     LISTofDEPTH                     allowed-depths (n is always a
                                           multiple of 4)

DEPTH
     1     CARD8                           depth
     1                                     unused
     2     n                               number of VISUALTYPES in visuals
     4                                     unused
     24n     LISTofVISUALTYPE              visuals

VISUALTYPE
     4     VISUALID                        visual-id
     1                                     class
          0     StaticGray
          1     GrayScale
          2     StaticColor
          3     PseudoColor
          4     TrueColor
          5     DirectColor
     1     CARD8                           bits-per-rgb-value
     2     CARD16                          colormap-entries
     4     CARD32                          red-mask
     4     CARD32                          green-mask
     4     CARD32                          blue-mask
     4                                     unused

Requests

CreateWindow
     1     1                               opcode
     1     CARD8                           depth
     2     8+n                             request length
     4     WINDOW                          wid
     4     WINDOW                          parent
     2     INT16                           x
     2     INT16                           y
     2     CARD16                          width
     2     CARD16                          height
     2     CARD16                          border-width
     2                                     class
          0     CopyFromParent
          1     InputOutput
          2     InputOnly
     4     VISUALID                        visual
          0     CopyFromParent
     4     BITMASK                         value-mask (has n bits set to 1)
          #x00000001     background-pixmap
          #x00000002     background-pixel
          #x00000004     border-pixmap
          #x00000008     border-pixel
          #x00000010     bit-gravity
          #x00000020     win-gravity
          #x00000040     backing-store
          #x00000080     backing-planes
          #x00000100     backing-pixel
          #x00000200     override-redirect
          #x00000400     save-under
          #x00000800     event-mask
          #x00001000     do-not-propagate-mask
          #x00002000     colormap
          #x00004000     cursor
     4n     LISTofVALUE                    value-list

  VALUEs
     4     PIXMAP                          background-pixmap
          0     None
          1     ParentRelative
     4     CARD32                          background-pixel
     4     PIXMAP                          border-pixmap
          0     CopyFromParent
     4     CARD32                          border-pixel
     1     BITGRAVITY                      bit-gravity
     1     WINGRAVITY                      win-gravity
     1                                     backing-store
          0     NotUseful
          1     WhenMapped
          2     Always
     4     CARD32                          backing-planes
     4     CARD32                          backing-pixel
     1     BOOL                            override-redirect
     1     BOOL                            save-under
     4     SETofEVENT                      event-mask
     4     SETofDEVICEEVENT                do-not-propagate-mask
     4     COLORMAP                        colormap
          0     CopyFromParent
     4     CURSOR                          cursor
          0     None

ChangeWindowAttributes
     1     2                               opcode
     1                                     unused
     2     3+n                             request length
     4     WINDOW                          window
     4     BITMASK                         value-mask (has n bits set to 1)
          encodings are the same as for CreateWindow
     4n     LISTofVALUE                    value-list
          encodings are the same as for CreateWindow

GetWindowAttributes
     1     3                               opcode
     1                                     unused
     2     2                               request length
     4     WINDOW                          window

▶
     1     1                               Reply
     1                                     backing-store
          0     NotUseful
          1     WhenMapped
          2     Always
     2     CARD16                          sequence number
     4     3                               reply length
     4     VISUALID                        visual
     2                                     class
          1     InputOutput
          2     InputOnly
     1     BITGRAVITY                      bit-gravity
     1     WINGRAVITY                      win-gravity
     4     CARD32                          backing-planes
     4     CARD32                          backing-pixel
     1     BOOL                            save-under
     1     BOOL                            map-is-installed
     1                                     map-state
          0     Unmapped
          1     Unviewable
          2     Viewable
     1     BOOL                            override-redirect
     4     COLORMAP                        colormap
          0     None
     4     SETofEVENT                      all-event-masks
     4     SETofEVENT                      your-event-mask
     2     SETofDEVICEEVENT                do-not-propagate-mask
     2                                     unused

DestroyWindow
     1     4                               opcode
     1                                     unused
     2     2                               request length
     4     WINDOW                          window

DestroySubwindows
     1     5                               opcode
     1                                     unused
     2     2                               request length
     4     WINDOW                          window

ChangeSaveSet
     1     6                               opcode
     1                                     mode
          0     Insert
          1     Delete
     2     2                               request length
     4     WINDOW                          window

ReparentWindow
     1     7                               opcode
     1                                     unused
     2     4                               request length
     4     WINDOW                          window
     4     WINDOW                          parent
     2     INT16                           x
     2     INT16                           y

MapWindow
     1     8                               opcode
     1                                     unused
     2     2                               request length
     4     WINDOW                          window

MapSubwindows
     1     9                               opcode
     1                                     unused
     2     2                               request length
     4     WINDOW                          window

UnmapWindow
     1     10                              opcode
     1                                     unused
     2     2                               request length
     4     WINDOW                          window

UnmapSubwindows
     1     11                              opcode
     1                                     unused
     2     2                               request length
     4     WINDOW                          window

ConfigureWindow
     1     12                              opcode
     1                                     unused
     2     3+n                             request length
     4     WINDOW                          window
     2     BITMASK                         value-mask (has n bits set to 1)
          #x0001     x
          #x0002     y
          #x0004     width
          #x0008     height
          #x0010     border-width
          #x0020     sibling
          #x0040     stack-mode
     2               unused
     4n     LISTofVALUE                    value-list

  VALUEs
     2     INT16                           x
     2     INT16                           y
     2     CARD16                          width
     2     CARD16                          height
     2     CARD16                          border-width
     4     WINDOW                          sibling
     1                                     stack-mode
          0     Above
          1     Below
          2     TopIf
          3     BottomIf
          4     Opposite

CirculateWindow
     1     13                              opcode
     1                                     direction
          0     RaiseLowest
          1     LowerHighest
     2     2                               request length
     4     WINDOW                          window

GetGeometry
     1     14                              opcode
     1                                     unused
     2     2                               request length
     4     DRAWABLE                        drawable

▶
     1     1                               Reply
     1     CARD8                           depth
     2     CARD16                          sequence number
     4     0                               reply length
     4     WINDOW                          root
     2     INT16                           x
     2     INT16                           y
     2     CARD16                          width
     2     CARD16                          height
     2     CARD16                          border-width
     10                                    unused

QueryTree
     1     15                              opcode
     1                                     unused
     2     2                               request length
     4     WINDOW                          window

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     n                               reply length
     4     WINDOW                          root
     4     WINDOW                          parent
          0     None
     2     n                               number of WINDOWs in children
     14                                    unused
     4n     LISTofWINDOW                   children

InternAtom
     1     16                              opcode
     1     BOOL                            only-if-exists
     2     2+(n+p)/4                       request length
     2     n                               length of name
     2                                     unused
     n     STRING8                         name
     p                                     unused, p=pad(n)

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     0                               reply length
     4     ATOM                            atom
           0     None
     20                                    unused

GetAtomName
     1     17                              opcode
     1                                     unused
     2     2                               request length
     4     ATOM                            atom

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     (n+p)/4                         reply length
     2     n                               length of name
     22                                    unused
     n     STRING8                         name
     p                                     unused, p=pad(n)

ChangeProperty
     1     18                              opcode
     1                                     mode
          0     Replace
          1     Prepend
          2     Append
     2     6+(n+p)/4                       request length
     4     WINDOW                          window
     4     ATOM                            property
     4     ATOM                            type
     1     CARD8                           format
     3                                     unused
     4     CARD32                          length of data in format units
                    (= n for format = 8)
                    (= n/2 for format = 16)
                    (= n/4 for format = 32)
     n     LISTofBYTE                      data
                    (n is a multiple of 2 for format = 16)
                    (n is a multiple of 4 for format = 32)
     p                                     unused, p=pad(n)


DeleteProperty
     1     19                              opcode
     1                                     unused
     2     3                               request length
     4     WINDOW                          window
     4     ATOM                            property

GetProperty
     1     20                              opcode
     1     BOOL                            delete
     2     6                               request length
     4     WINDOW                          window
     4     ATOM                            property
     4     ATOM                            type
          0     AnyPropertyType
     4     CARD32                          long-offset
     4     CARD32                          long-length

▶
     1     1                               Reply
     1     CARD8                           format
     2     CARD16                          sequence number
     4     (n+p)/4                         reply length
     4     ATOM                            type
          0     None
     4     CARD32                          bytes-after
     4     CARD32                          length of value in format units
                    (= 0 for format = 0)
                    (= n for format = 8)
                    (= n/2 for format = 16)
                    (= n/4 for format = 32)
     12                                    unused
     n     LISTofBYTE                      value
                    (n is zero for format = 0)
                    (n is a multiple of 2 for format = 16)
                    (n is a multiple of 4 for format = 32)
     p                                     unused, p=pad(n)

ListProperties
     1     21                              opcode
     1                                     unused
     2     2                               request length
     4     WINDOW                          window

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     n                               reply length
     2     n                               number of ATOMs in atoms
     22                                    unused
     4n     LISTofATOM                     atoms

SetSelectionOwner
     1     22                              opcode
     1                                     unused
     2     4                               request length
     4     WINDOW                          owner
          0     None
     4     ATOM                            selection
     4     TIMESTAMP                       time
          0     CurrentTime

GetSelectionOwner
     1     23                              opcode
     1                                     unused
     2     2                               request length
     4     ATOM                            selection

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     0                               reply length
     4     WINDOW                          owner
          0     None
     20                                    unused

ConvertSelection
     1     24                              opcode
     1                                     unused
     2     6                               request length
     4     WINDOW                          requestor
     4     ATOM                            selection
     4     ATOM                            target
     4     ATOM                            property
          0     None
     4     TIMESTAMP                       time
          0     CurrentTime

SendEvent
     1     25                              opcode
     1     BOOL                            propagate
     2     11                              requestlength
     4     WINDOW                          destination
          0     PointerWindow
          1     InputFocus
     4     SETofEVENT                      event-mask
     32                                    event
          standard event format (see the Events section)

GrabPointer
     1     26                              opcode
     1     BOOL                            owner-events
     2     6                               request length
     4     WINDOW                          grab-window
     2     SETofPOINTEREVENT               event-mask
     1                                     pointer-mode
          0     Synchronous
          1     Asynchronous
     1                                     keyboard-mode
          0     Synchronous
          1     Asynchronous
     4     WINDOW                          confine-to
          0     None
     4     CURSOR                          cursor
          0     None
     4     TIMESTAMP                       time
          0     CurrentTime

▶
     1     1                               Reply
     1                                     status
          0     Success
          1     AlreadyGrabbed
          2     InvalidTime
          3     NotViewable
          4     Frozen
     2     CARD16                          sequence number
     4     0                               reply length
     24                                    unused

UngrabPointer
     1     27                              opcode
     1                                     unused
     2     2                               request length
     4     TIMESTAMP                       time
          0     CurrentTime

GrabButton
     1     28                              opcode
     1     BOOL                            owner-events
     2     6                               request length
     4     WINDOW                          grab-window
     2     SETofPOINTEREVENT               event-mask
     1                                     pointer-mode
          0     Synchronous
          1     Asynchronous
     1                                     keyboard-mode
          0     Synchronous
          1     Asynchronous
     4     WINDOW                          confine-to
          0     None
     4     CURSOR                          cursor
          0     None
     1     BUTTON                          button
          0     AnyButton
     1                                     unused
     2     SETofKEYMASK                    modifiers
          #x8000                           AnyModifier

UngrabButton
     1     29                              opcode
     1     BUTTON                          button
          0     AnyButton
     2     3                               request length
     4     WINDOW                          grab-window
     2     SETofKEYMASK                    modifiers
          #x8000                           AnyModifier
     2                                     unused

ChangeActivePointerGrab
     1     30                              opcode
     1                                     unused
     2     4                               request length
     4     CURSOR                          cursor
          0     None
     4     TIMESTAMP                       time
          0     CurrentTime
     2     SETofPOINTEREVENT               event-mask
     2                                     unused

GrabKeyboard
     1     31                              opcode
     1     BOOL                            owner-events
     2     4                               request length
     4     WINDOW                          grab-window
     4     TIMESTAMP                       time
          0     CurrentTime
     1                                     pointer-mode
          0     Synchronous
          1     Asynchronous
     1                                     keyboard-mode
          0     Synchronous
          1     Asynchronous
     2                                     unused

▶
     1     1                               Reply
     1                                     status
          0     Success
          1     AlreadyGrabbed
          2     InvalidTime
          3     NotViewable
          4     Frozen
     2     CARD16                          sequence number
     4     0                               reply length
     24                                    unused

UngrabKeyboard
     1     32                              opcode
     1                                     unused
     2     2                               request length
     4     TIMESTAMP                       time
          0     CurrentTime

GrabKey
     1     33                              opcode
     1     BOOL                            owner-events
     2     4                               request length
     4     WINDOW                          grab-window
     2     SETofKEYMASK                    modifiers
          #x8000     AnyModifier
     1     KEYCODE                         key
          0     AnyKey
     1                                     pointer-mode
          0     Synchronous
          1     Asynchronous
     1                                     keyboard-mode
          0     Synchronous
          1     Asynchronous
     3                                     unused

UngrabKey
     1     34                              opcode
     1     KEYCODE                         key
          0     AnyKey
     2     3                               request length
     4     WINDOW                          grab-window
     2     SETofKEYMASK                    modifiers
          #x8000     AnyModifier
     2                                     unused

AllowEvents
     1     35                              opcode
     1                                     mode
          0     AsyncPointer
          1     SyncPointer
          2     ReplayPointer
          3     AsyncKeyboard
          4     SyncKeyboard
          5     ReplayKeyboard
          6     AsyncBoth
          7     SyncBoth
     2     2                               request length
     4     TIMESTAMP                       time
          0     CurrentTime

GrabServer
     1     36                              opcode
     1                                     unused
     2     1                               request length

UngrabServer
     1     37                              opcode
     1                                     unused
     2     1                               request length

QueryPointer
     1     38                              opcode
     1                                     unused
     2     2                               request length
     4     WINDOW                          window

▶
     1     1                               Reply
     1     BOOL                            same-screen
     2     CARD16                          sequence number
     4     0                               reply length
     4     WINDOW                          root
     4     WINDOW                          child
          0     None
     2     INT16                           root-x
     2     INT16                           root-y
     2     INT16                           win-x
     2     INT16                           win-y
     2     SETofKEYBUTMASK                 mask
     6                                     unused

GetMotionEvents
     1     39                              opcode
     1                                     unused
     2     4                               request length
     4     WINDOW                          window
     4     TIMESTAMP                       start
          0     CurrentTime
     4     TIMESTAMP                       stop
          0     CurrentTime

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     2n                              reply length
     4     n                               number of TIMECOORDs in events
     20                                    unused
     8n     LISTofTIMECOORD                events

  TIMECOORD
     4     TIMESTAMP                       time
     2     INT16                           x
     2     INT16                           y

TranslateCoordinates
     1     40                              opcode
     1                                     unused
     2     4                               request length
     4     WINDOW                          src-window
     4     WINDOW                          dst-window
     2     INT16                           src-x
     2     INT16                           src-y
▶
     1     1                               Reply
     1     BOOL                            same-screen
     2     CARD16                          sequence number
     4     0                               reply length
     4     WINDOW                          child
          0     None
     2     INT16                           dst-x
     2     INT16                           dst-y
     16                                    unused

WarpPointer
     1     41                              opcode
     1                                     unused
     2     6                               request length
     4     WINDOW                          src-window
          0     None
     4     WINDOW                          dst-window
          0     None
     2     INT16                           src-x
     2     INT16                           src-y
     2     CARD16                          src-width
     2     CARD16                          src-height
     2     INT16                           dst-x
     2     INT16                           dst-y

SetInputFocus
     1     42                              opcode
     1                                     revert-to
          0     None
          1     PointerRoot
          2     Parent
     2     3                               request length
     4     WINDOW                          focus
          0     None
          1     PointerRoot
     4     TIMESTAMP                       time
          0     CurrentTime

GetInputFocus
     1     43                              opcode
     1                                     unused
     2     1                               request length

▶
     1     1                               Reply
     1                                     revert-to
          0     None
          1     PointerRoot
          2     Parent
     2     CARD16                          sequence number
     4     0                               reply length
     4     WINDOW                          focus
          0     None
          1     PointerRoot
     20                                    unused

QueryKeymap
     1     44                              opcode
     1                                     unused
     2     1                               request length

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     2                               reply length
     32     LISTofCARD8                    keys

OpenFont
     1     45                              opcode
     1                                     unused
     2     3+(n+p)/4                       request length
     4     FONT                            fid
     2     n                               length of name
     2                                     unused
     n     STRING8                         name
     p                                     unused, p=pad(n)

CloseFont
     1     46                              opcode
     1                                     unused
     2     2                               request length
     4     FONT                            font

QueryFont
     1     47                              opcode
     1                                     unused
     2     2                               request length
     4     FONTABLE                        font

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     7+2n+3m                         reply length
     12     CHARINFO                       min-bounds
     4                                     unused
     12     CHARINFO                       max-bounds
     4                                     unused
     2     CARD16                          min-char-or-byte2
     2     CARD16                          max-char-or-byte2
     2     CARD16                          default-char
     2     n                               number of FONTPROPs in properties
     1                                     draw-direction
          0     LeftToRight
          1     RightToLeft
     1     CARD8                           min-byte1
     1     CARD8                           max-byte1
     1     BOOL                            all-chars-exist
     2     INT16                           font-ascent
     2     INT16                           font-descent
     4     m                               number of CHARINFOs in char-infos
     8n     LISTofFONTPROP                 properties
     12m     LISTofCHARINFO                char-infos

  FONTPROP
     4     ATOM                            name
     4     <32-bits>                 value

  CHARINFO
     2     INT16                           left-side-bearing
     2     INT16                           right-side-bearing
     2     INT16                           character-width
     2     INT16                           ascent
     2     INT16                           descent
     2     CARD16                          attributes

QueryTextExtents
     1     48                              opcode
     1     BOOL                            odd length, True if p = 2
     2     2+(2n+p)/4                      request length
     4     FONTABLE                        font
     2n     STRING16                       string
     p                                     unused, p=pad(2n)

▶
     1     1                               Reply
     1                                     draw-direction
          0     LeftToRight
          1     RightToLeft
     2     CARD16                          sequence number
     4     0                               reply length
     2     INT16                           font-ascent
     2     INT16                           font-descent
     2     INT16                           overall-ascent
     2     INT16                           overall-descent
     4     INT32                           overall-width
     4     INT32                           overall-left
     4     INT32                           overall-right
     4                                     unused

ListFonts
     1     49                              opcode
     1                                     unused
     2     2+(n+p)/4                       request length
     2     CARD16                          max-names
     2     n                               length of pattern
     n     STRING8                         pattern
     p                                     unused, p=pad(n)

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     (n+p)/4                         reply length
     2     CARD16                          number of STRs in names
     22                                    unused
     n     LISTofSTR                       names
     p                                     unused, p=pad(n)

ListFontsWithInfo
     1     50                              opcode
     1                                     unused
     2     2+(n+p)/4                       request length
     2     CARD16                          max-names
     2     n                               length of pattern
     n     STRING8                         pattern
     p                                     unused, p=pad(n)

▶ (except for last in series)
     1     1                               Reply
     1     n                               length of name in bytes
     2     CARD16                          sequence number
     4     7+2m+(n+p)/4                    reply length
     12     CHARINFO                       min-bounds
     4                                     unused
     12     CHARINFO                       max-bounds
     4                                     unused
     2     CARD16                          min-char-or-byte2
     2     CARD16                          max-char-or-byte2
     2     CARD16                          default-char
     2     m                               number of FONTPROPs in properties
     1                                     draw-direction
          0     LeftToRight
          1     RightToLeft
     1     CARD8                           min-byte1
     1     CARD8                           max-byte1
     1     BOOL                            all-chars-exist
     2     INT16                           font-ascent
     2     INT16                           font-descent
     4     CARD32                          replies-hint
     8m     LISTofFONTPROP                 properties
     n     STRING8                         name
     p                                     unused, p=pad(n)

  FONTPROP
     encodings are the same as for QueryFont

  CHARINFO
     encodings are the same as for QueryFont

▶ (last in series)
     1     1                               Reply
     1     0                               last-reply indicator
     2     CARD16                          sequence number
     4     7                               reply length
     52                                    unused

SetFontPath
     1     51                              opcode
     1                                     unused
     2     2+(n+p)/4                       request length
     2     CARD16                          number of STRs in path
     2                                     unused
     n     LISTofSTR                       path
     p                                     unused, p=pad(n)

GetFontPath
     1     52                              opcode
     1                                     unused
     2     1                               request list

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     (n+p)/4                         reply length
     2     CARD16                          number of STRs in path
     22                                    unused
     n     LISTofSTR                       path
     p                                     unused, p=pad(n)

CreatePixmap
     1     53                              opcode
     1     CARD8                           depth
     2     4                               request length
     4     PIXMAP                          pid
     4     DRAWABLE                        drawable
     2     CARD16                          width
     2     CARD16                          height

FreePixmap
     1     54                              opcode
     1                                     unused
     2     2                               request length
     4     PIXMAP                          pixmap

CreateGC
     1     55                              opcode
     1                                     unused
     2     4+n                             request length
     4     GCONTEXT                        cid
     4     DRAWABLE                        drawable
     4     BITMASK                         value-mask (has n bits set to 1)
          #x00000001     function
          #x00000002     plane-mask
          #x00000004     foreground
          #x00000008     background
          #x00000010     line-width
          #x00000020     line-style
          #x00000040     cap-style
          #x00000080     join-style
          #x00000100     fill-style
          #x00000200     fill-rule
          #x00000400     tile
          #x00000800     stipple
          #x00001000     tile-stipple-x-origin
          #x00002000     tile-stipple-y-origin
          #x00004000     font
          #x00008000     subwindow-mode
          #x00010000     graphics-exposures
          #x00020000     clip-x-origin
          #x00040000     clip-y-origin
          #x00080000     clip-mask
          #x00100000     dash-offset
          #x00200000     dashes
          #x00400000     arc-mode
     4n     LISTofVALUE                    value-list

  VALUEs
     1                                     function
           0     Clear
           1     And
           2     AndReverse
           3     Copy
           4     AndInverted
           5     NoOp
           6     Xor
           7     Or
           8     Nor
           9     Equiv
          10     Invert
          11     OrReverse
          12     CopyInverted
          13     OrInverted
          14     Nand
          15     Set
     4     CARD32                          plane-mask
     4     CARD32                          foreground
     4     CARD32                          background
     2     CARD16                          line-width
     1                                     line-style
          0     Solid
          1     OnOffDash
          2     DoubleDash
     1                                     cap-style
          0     NotLast
          1     Butt
          2     Round
          3     Projecting
     1                                     join-style
          0     Miter
          1     Round
          2     Bevel
     1                                     fill-style
          0     Solid
          1     Tiled
          2     Stippled
          3     OpaqueStippled
     1                                     fill-rule
          0     EvenOdd
          1     Winding
     4     PIXMAP                          tile
     4     PIXMAP                          stipple
     2     INT16                           tile-stipple-x-origin
     2     INT16                           tile-stipple-y-origin
     4     FONT                            font
     1                                     subwindow-mode
          0     ClipByChildren
          1     IncludeInferiors
     1     BOOL                            graphics-exposures
     2     INT16                           clip-x-origin
     2     INT16                           clip-y-origin
     4     PIXMAP                          clip-mask
          0     None
     2     CARD16                          dash-offset
     1     CARD8                           dashes
     1                                     arc-mode
          0     Chord
          1     PieSlice

ChangeGC
     1     56                              opcode
     1                                     unused
     2     3+n                             request length
     4     GCONTEXT                        gc
     4     BITMASK                         value-mask (has n bits set to 1)
          encodings are the same as for CreateGC
     4n     LISTofVALUE                    value-list
          encodings are the same as for CreateGC

CopyGC
     1     57                              opcode
     1                                     unused
     2     4                               request length
     4     GCONTEXT                        src-gc
     4     GCONTEXT                        dst-gc
     4     BITMASK                         value-mask
          encodings are the same as for CreateGC

SetDashes
     1     58                              opcode
     1                                     unused
     2     3+(n+p)/4                       request length
     4     GCONTEXT                        gc
     2     CARD16                          dash-offset
     2     n                               length of dashes
     n     LISTofCARD8                     dashes
     p                                     unused, p=pad(n)

SetClipRectangles
     1     59                              opcode
     1                                     ordering
          0     UnSorted
          1     YSorted
          2     YXSorted
          3     YXBanded
     2     3+2n                            request length
     4     GCONTEXT                        gc
     2     INT16                           clip-x-origin
     2     INT16                           clip-y-origin
     8n     LISTofRECTANGLE                rectangles

FreeGC
     1     60                              opcode
     1                                     unused
     2     2                               request length
     4     GCONTEXT                        gc

ClearArea
     1     61                              opcode
     1     BOOL                            exposures
     2     4                               request length
     4     WINDOW                          window
     2     INT16                           x
     2     INT16                           y
     2     CARD16                          width
     2     CARD16                          height

CopyArea
     1     62                              opcode
     1                                     unused
     2     7                               request length
     4     DRAWABLE                        src-drawable
     4     DRAWABLE                        dst-drawable
     4     GCONTEXT                        gc
     2     INT16                           src-x
     2     INT16                           src-y
     2     INT16                           dst-x
     2     INT16                           dst-y
     2     CARD16                          width
     2     CARD16                          height

CopyPlane
     1     63                              opcode
     1                                     unused
     2     8                               request length
     4     DRAWABLE                        src-drawable
     4     DRAWABLE                        dst-drawable
     4     GCONTEXT                        gc
     2     INT16                           src-x
     2     INT16                           src-y
     2     INT16                           dst-x
     2     INT16                           dst-y
     2     CARD16                          width
     2     CARD16                          height
     4     CARD32                          bit-plane

PolyPoint
     1     64                              opcode
     1                                     coordinate-mode
          0     Origin
          1     Previous
     2     3+n                             request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     4n     LISTofPOINT                    points

PolyLine
     1     65                              opcode
     1                                     coordinate-mode
          0     Origin
          1     Previous
     2     3+n                             request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     4n     LISTofPOINT                    points

PolySegment
     1     66                              opcode
     1                                     unused
     2     3+2n                            request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     8n     LISTofSEGMENT                  segments

  SEGMENT
     2     INT16                           x1
     2     INT16                           y1
     2     INT16                           x2
     2     INT16                           y2

PolyRectangle
     1     67                              opcode
     1                                     unused
     2     3+2n                            request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     8n     LISTofRECTANGLE                rectangles

PolyArc
     1     68                              opcode
     1                                     unused
     2     3+3n                            request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     12n     LISTofARC                     arcs

FillPoly
     1     69                              opcode
     1                                     unused
     2     4+n                             request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     1                                     shape
          0     Complex
          1     Nonconvex
          2     Convex
     1                                     coordinate-mode
          0     Origin
          1     Previous
     2                                     unused
     4n     LISTofPOINT                    points

PolyFillRectangle
     1     70                              opcode
     1                                     unused
     2     3+2n                            request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     8n     LISTofRECTANGLE                rectangles

PolyFillArc
     1     71                              opcode
     1                                     unused
     2     3+3n                            request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     12n     LISTofARC                     arcs

PutImage
     1     72                              opcode
     1                                     format
          0     Bitmap
          1     XYPixmap
          2     ZPixmap
     2     6+(n+p)/4                       request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     2     CARD16                          width
     2     CARD16                          height
     2     INT16                           dst-x
     2     INT16                           dst-y
     1     CARD8                           left-pad
     1     CARD8                           depth
     2                                     unused
     n     LISTofBYTE                      data
     p                                     unused, p=pad(n)

GetImage
     1     73                              opcode
     1                                     format
          1     XYPixmap
          2     ZPixmap
     2     5                               request length
     4     DRAWABLE                        drawable
     2     INT16                           x
     2     INT16                           y
     2     CARD16                          width
     2     CARD16                          height
     4     CARD32                          plane-mask

▶
     1     1                               Reply
     1     CARD8                           depth
     2     CARD16                          sequence number
     4     (n+p)/4                         reply length
     4     VISUALID                        visual
          0     None
     20                                    unused
     n     LISTofBYTE                      data
     p                                     unused, p=pad(n)

PolyText8
     1     74                              opcode
     1                                     unused
     2     4+(n+p)/4                       request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     2     INT16                           x
     2     INT16                           y
     n     LISTofTEXTITEM8                 items
     p                                     unused, p=pad(n)  (p is always 0
                                           or 1)

  TEXTITEM8
     1     m                               length of string (cannot be 255)
     1     INT8                            delta
     m     STRING8                         string
  or
     1     255                             font-shift indicator
     1                                     font byte 3 (most-significant)
     1                                     font byte 2
     1                                     font byte 1
     1                                     font byte 0 (least-significant)

PolyText16
     1     75                              opcode
     1                                     unused
     2     4+(n+p)/4                       request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     2     INT16                           x
     2     INT16                           y
     n     LISTofTEXTITEM16                items
     p                                     unused, p=pad(n)  (p must be 0 or
                                           1)

  TEXTITEM16
     1     m                               number of CHAR2Bs in string
                                           (cannot be 255)
     1     INT8                            delta
     2m     STRING16                       string
  or
     1     255                             font-shift indicator
     1                                     font byte 3 (most-significant)
     1                                     font byte 2
     1                                     font byte 1
     1                                     font byte 0 (least-significant)

ImageText8
     1     76                              opcode
     1     n                               length of string
     2     4+(n+p)/4                       request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     2     INT16                           x
     2     INT16                           y
     n     STRING8                         string
     p                                     unused, p=pad(n)

ImageText16
     1     77                              opcode
     1     n                               number of CHAR2Bs in string
     2     4+(2n+p)/4                      request length
     4     DRAWABLE                        drawable
     4     GCONTEXT                        gc
     2     INT16                           x
     2     INT16                           y
     2n     STRING16                       string
     p                                     unused, p=pad(2n)

CreateColormap
     1     78                              opcode
     1                                     alloc
          0     None
          1     All
     2     4                               request length
     4     COLORMAP                        mid
     4     WINDOW                          window
     4     VISUALID                        visual

FreeColormap
     1     79                              opcode
     1                                     unused
     2     2                               request length
     4     COLORMAP                        cmap

CopyColormapAndFree
     1     80                              opcode
     1                                     unused
     2     3                               request length
     4     COLORMAP                        mid
     4     COLORMAP                        src-cmap

InstallColormap
     1     81                              opcode
     1                                     unused
     2     2                               request length
     4     COLORMAP                        cmap

UninstallColormap
     1     82                              opcode
     1                                     unused
     2     2                               request length
     4     COLORMAP                        cmap

ListInstalledColormaps
     1     83                              opcode
     1                                     unused
     2     2                               request length
     4     WINDOW                          window

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     n                               reply length
     2     n                               number of COLORMAPs in cmaps
     22                                    unused
     4n     LISTofCOLORMAP                 cmaps

AllocColor
     1     84                              opcode
     1                                     unused
     2     4                               request length
     4     COLORMAP                        cmap
     2     CARD16                          red
     2     CARD16                          green
     2     CARD16                          blue
     2                                     unused

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     0                               reply length
     2     CARD16                          red
     2     CARD16                          green
     2     CARD16                          blue
     2                                     unused
     4     CARD32                          pixel
     12                                    unused

AllocNamedColor
     1     85                              opcode
     1                                     unused
     2     3+(n+p)/4                       request length
     4     COLORMAP                        cmap
     2     n                               length of name
     2                                     unused
     n     STRING8                         name
     p                                     unused, p=pad(n)

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     0                               reply length
     4     CARD32                          pixel
     2     CARD16                          exact-red
     2     CARD16                          exact-green
     2     CARD16                          exact-blue
     2     CARD16                          visual-red
     2     CARD16                          visual-green
     2     CARD16                          visual-blue
     8                                     unused

AllocColorCells
     1     86                              opcode
     1     BOOL                            contiguous
     2     3                               request length
     4     COLORMAP                        cmap
     2     CARD16                          colors
     2     CARD16                          planes

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     n+m                             reply length
     2     n                               number of CARD32s in pixels
     2     m                               number of CARD32s in masks
     20                                    unused
     4n     LISTofCARD32                   pixels
     4m     LISTofCARD32                   masks

AllocColorPlanes
     1     87                              opcode
     1     BOOL                            contiguous
     2     4                               request length
     4     COLORMAP                        cmap
     2     CARD16                          colors
     2     CARD16                          reds
     2     CARD16                          greens
     2     CARD16                          blues

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     n                               reply length
     2     n                               number of CARD32s in pixels
     2                                     unused
     4     CARD32                          red-mask
     4     CARD32                          green-mask
     4     CARD32                          blue-mask
     8                                     unused
     4n     LISTofCARD32                   pixels

FreeColors
     1     88                              opcode
     1                                     unused
     2     3+n                             request length
     4     COLORMAP                        cmap
     4     CARD32                          plane-mask
     4n     LISTofCARD32                   pixels

StoreColors
     1     89                              opcode
     1                                     unused
     2     2+3n                            request length
     4     COLORMAP                        cmap
     12n     LISTofCOLORITEM               items

  COLORITEM
     4     CARD32                          pixel
     2     CARD16                          red
     2     CARD16                          green
     2     CARD16                          blue
     1                                     do-red, do-green, do-blue
          #x01     do-red (1 is True, 0 is False)
          #x02     do-green (1 is True, 0 is False)
          #x04     do-blue (1 is True, 0 is False)
          #xF8     unused
     1                                     unused

StoreNamedColor
     1     90                              opcode
     1                                     do-red, do-green, do-blue
          #x01     do-red (1 is True, 0 is False)
          #x02     do-green (1 is True, 0 is False)
          #x04     do-blue (1 is True, 0 is False)
          #xF8     unused
     2     4+(n+p)/4                       request length
     4     COLORMAP                        cmap
     4     CARD32                          pixel
     2     n                               length of name
     2                                     unused
     n     STRING8                         name
     p                                     unused, p=pad(n)

QueryColors
     1     91                              opcode
     1                                     unused
     2     2+n                             request length
     4     COLORMAP                        cmap
     4n     LISTofCARD32                   pixels

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     2n                              reply length
     2     n                               number of RGBs in colors
     22                                    unused
     8n     LISTofRGB                      colors

  RGB
     2     CARD16                          red
     2     CARD16                          green
     2     CARD16                          blue
     2                                     unused

LookupColor
     1     92                              opcode
     1                                     unused
     2     3+(n+p)/4                       request length
     4     COLORMAP                        cmap
     2     n                               length of name
     2                                     unused
     n     STRING8                         name
     p                                     unused, p=pad(n)

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     0                               reply length
     2     CARD16                          exact-red
     2     CARD16                          exact-green
     2     CARD16                          exact-blue
     2     CARD16                          visual-red
     2     CARD16                          visual-green
     2     CARD16                          visual-blue
     12                                    unused

CreateCursor
     1     93                              opcode
     1                                     unused
     2     8                               request length
     4     CURSOR                          cid
     4     PIXMAP                          source
     4     PIXMAP                          mask
          0     None
     2     CARD16                          fore-red
     2     CARD16                          fore-green
     2     CARD16                          fore-blue
     2     CARD16                          back-red
     2     CARD16                          back-green
     2     CARD16                          back-blue
     2     CARD16                          x
     2     CARD16                          y

CreateGlyphCursor
     1     94                              opcode
     1                                     unused
     2     8                               request length
     4     CURSOR                          cid
     4     FONT                            source-font
     4     FONT                            mask-font
          0     None
     2     CARD16                          source-char
     2     CARD16                          mask-char
     2     CARD16                          fore-red
     2     CARD16                          fore-green
     2     CARD16                          fore-blue
     2     CARD16                          back-red
     2     CARD16                          back-green
     2     CARD16                          back-blue

FreeCursor
     1     95                              opcode
     1                                     unused
     2     2                               request length
     4     CURSOR                          cursor

RecolorCursor
     1     96                              opcode
     1                                     unused
     2     5                               request length
     4     CURSOR                          cursor
     2     CARD16                          fore-red
     2     CARD16                          fore-green
     2     CARD16                          fore-blue
     2     CARD16                          back-red
     2     CARD16                          back-green
     2     CARD16                          back-blue

QueryBestSize
     1     97                              opcode
     1                                     class
          0     Cursor
          1     Tile
          2     Stipple
     2     3                               request length
     4     DRAWABLE                        drawable
     2     CARD16                          width
     2     CARD16                          height

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     0                               reply length
     2     CARD16                          width
     2     CARD16                          height
     20                                    unused

QueryExtension
     1     98                              opcode
     1                                     unused
     2     2+(n+p)/4                       request length
     2     n                               length of name
     2                                     unused
     n     STRING8                         name
     p                                     unused, p=pad(n)

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     0                               reply length
     1     BOOL                            present
     1     CARD8                           major-opcode
     1     CARD8                           first-event
     1     CARD8                           first-error
     20                                    unused

ListExtensions
     1     99                              opcode
     1                                     unused
     2     1                               request length

▶
     1     1                               Reply
     1     CARD8                           number of STRs in names
     2     CARD16                          sequence number
     4     (n+p)/4                         reply length
     24                                    unused
     n     LISTofSTR                       names
     p                                     unused, p=pad(n)

ChangeKeyboardMapping
     1     100                             opcode
     1     n                               keycode-count
     2     2+nm                            request length
     1     KEYCODE                         first-keycode
     1     m                               keysyms-per-keycode
     2                                     unused
     4nm     LISTofKEYSYM                  keysyms

GetKeyboardMapping
     1     101                             opcode
     1                                     unused
     2     2                               request length
     1     KEYCODE                         first-keycode
     1     m                               count
     2                                     unused

▶
     1     1                               Reply
     1     n                               keysyms-per-keycode
     2     CARD16                          sequence number
     4     nm                              reply length (m = count field
                                           from the request)
     24                                    unused
     4nm     LISTofKEYSYM                  keysyms

ChangeKeyboardControl
     1     102                             opcode
     1                                     unused
     2     2+n                             request length
     4     BITMASK                         value-mask (has n bits set to 1)
          #x0001     key-click-percent
          #x0002     bell-percent
          #x0004     bell-pitch
          #x0008     bell-duration
          #x0010     led
          #x0020     led-mode
          #x0040     key
          #x0080     auto-repeat-mode
     4n     LISTofVALUE                    value-list

  VALUEs
     1     INT8                            key-click-percent
     1     INT8                            bell-percent
     2     INT16                           bell-pitch
     2     INT16                           bell-duration
     1     CARD8                           led
     1                                     led-mode
          0     Off
          1     On
     1     KEYCODE                         key
     1                                     auto-repeat-mode
          0     Off
          1     On
          2     Default

GetKeyboardControl
     1     103                             opcode
     1                                     unused
     2     1                               request length

▶
     1     1                               Reply
     1                                     global-auto-repeat
          0     Off
          1     On
     2     CARD16                          sequence number
     4     5                               reply length
     4     CARD32                          led-mask
     1     CARD8                           key-click-percent
     1     CARD8                           bell-percent
     2     CARD16                          bell-pitch
     2     CARD16                          bell-duration
     2                                     unused
     32     LISTofCARD8                    auto-repeats

Bell
     1     104                             opcode
     1     INT8                            percent
     2     1                               request length

ChangePointerControl
     1     105                             opcode
     1                                     unused
     2     3                               request length
     2     INT16                           acceleration-numerator
     2     INT16                           acceleration-denominator
     2     INT16                           threshold
     1     BOOL                            do-acceleration
     1     BOOL                            do-threshold

GetPointerControl
     1     106                             opcode
     1                                     unused
     2     1                               request length

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     0                               reply length
     2     CARD16                          acceleration-numerator
     2     CARD16                          acceleration-denominator
     2     CARD16                          threshold
     18                                    unused

SetScreenSaver
     1     107                             opcode
     1                                     unused
     2     3                               request length
     2     INT16                           timeout
     2     INT16                           interval
     1                                     prefer-blanking
          0     No
          1     Yes
          2     Default
     1                                     allow-exposures
          0     No
          1     Yes
          2     Default
     2                                     unused

GetScreenSaver
     1     108                             opcode
     1                                     unused
     2     1                               request length

▶
     1     1                               Reply
     1                                     unused
     2     CARD16                          sequence number
     4     0                               reply length
     2     CARD16                          timeout
     2     CARD16                          interval
     1                                     prefer-blanking
          0     No
          1     Yes
     1                                     allow-exposures
          0     No
          1     Yes
     18                                    unused

ChangeHosts
     1     109                             opcode
     1                                     mode
          0     Insert
          1     Delete
     2     2+(n+p)/4                       request length
     1                                     family
          0     Internet
          1     DECnet
          2     Chaos
     1                                     unused
     2     n                               length of address
     n     LISTofCARD8                     address
     p                                     unused, p=pad(n)

ListHosts
     1     110                             opcode
     1                                     unused
     2     1                               request length

▶
     1     1                               Reply
     1                                     mode
          0     Disabled
          1     Enabled
     2     CARD16                          sequence number
     4     n/4                             reply length
     2     CARD16                          number of HOSTs in hosts
     22                                    unused
     n     LISTofHOST                      hosts (n always a multiple of 4)

SetAccessControl
     1     111                             opcode
     1                                     mode
          0     Disable
          1     Enable
     2     1                               request length

SetCloseDownMode
     1     112                             opcode
     1                                     mode
          0     Destroy
          1     RetainPermanent
          2     RetainTemporary
     2     1                               request length

KillClient
     1     113                             opcode
     1                                     unused
     2     2                               request length
     4     CARD32                          resource
          0     AllTemporary

RotateProperties
     1     114                             opcode
     1                                     unused
     2     3+n                             request length
     4     WINDOW                          window
     2     n                               number of properties
     2     INT16                           delta
     4n    LISTofATOM                      properties

ForceScreenSaver
     1     115                             opcode
     1                                     mode
          0     Reset
          1     Activate
     2     1                               request length

SetPointerMapping
     1     116                             opcode
     1     n                               length of map
     2     1+(n+p)/4                       request length
     n     LISTofCARD8                     map
     p                                     unused, p=pad(n)

▶
     1     1                               Reply
     1                                     status
          0     Success
          1     Busy
     2     CARD16                          sequence number
     4     0                               reply length
     24                                    unused

GetPointerMapping
     1     117                             opcode
     1                                     unused
     2     1                               request length

▶
     1     1                               Reply
     1     n                               length of map
     2     CARD16                          sequence number
     4     (n+p)/4                         reply length
     24                                    unused
     n     LISTofCARD8                     map
     p                                     unused, p=pad(n)

SetModifierMapping
     1     118                             opcode
     1     n                               keycodes-per-modifier
     2     1+2n                            request length
     8n    LISTofKEYCODE                   keycodes

▶
     1     1                               Reply
     1                                     status
          0     Success
          1     Busy
          2     Failed
     2     CARD16                          sequence number
     4     0                               reply length
     24                                    unused

GetModifierMapping
     1     119                             opcode
     1                                     unused
     2     1                               request length

▶
     1     1                               Reply
     1     n                               keycodes-per-modifier
     2     CARD16                          sequence number
     4     2n                              reply length
     24                                    unused
     8n     LISTofKEYCODE                  keycodes

NoOperation
     1     127                             opcode
     1                                     unused
     2     1+n                             request length
     4n                                    unused

Events

KeyPress
     1     2                               code
     1     KEYCODE                         detail
     2     CARD16                          sequence number
     4     TIMESTAMP                       time
     4     WINDOW                          root
     4     WINDOW                          event
     4     WINDOW                          child
          0     None
     2     INT16                           root-x
     2     INT16                           root-y
     2     INT16                           event-x
     2     INT16                           event-y
     2     SETofKEYBUTMASK                 state
     1     BOOL                            same-screen
     1                                     unused

KeyRelease
     1     3                               code
     1     KEYCODE                         detail
     2     CARD16                          sequence number
     4     TIMESTAMP                       time
     4     WINDOW                          root
     4     WINDOW                          event
     4     WINDOW                          child
          0     None
     2     INT16                           root-x
     2     INT16                           root-y
     2     INT16                           event-x
     2     INT16                           event-y
     2     SETofKEYBUTMASK                 state
     1     BOOL                            same-screen
     1                                     unused

ButtonPress
     1     4                               code
     1     BUTTON                          detail
     2     CARD16                          sequence number
     4     TIMESTAMP                       time
     4     WINDOW                          root
     4     WINDOW                          event
     4     WINDOW                          child
          0     None
     2     INT16                           root-x
     2     INT16                           root-y
     2     INT16                           event-x
     2     INT16                           event-y
     2     SETofKEYBUTMASK                 state
     1     BOOL                            same-screen
     1                                     unused

ButtonRelease
     1     5                               code
     1     BUTTON                          detail
     2     CARD16                          sequence number
     4     TIMESTAMP                       time
     4     WINDOW                          root
     4     WINDOW                          event
     4     WINDOW                          child
          0     None
     2     INT16                           root-x
     2     INT16                           root-y
     2     INT16                           event-x
     2     INT16                           event-y
     2     SETofKEYBUTMASK                 state
     1     BOOL                            same-screen
     1                                     unused

MotionNotify
     1     6                               code
     1                                     detail
          0     Normal
          1     Hint
     2     CARD16                          sequence number
     4     TIMESTAMP                       time
     4     WINDOW                          root
     4     WINDOW                          event
     4     WINDOW                          child
           0     None
     2     INT16                           root-x
     2     INT16                           root-y
     2     INT16                           event-x
     2     INT16                           event-y
     2     SETofKEYBUTMASK                 state
     1     BOOL                            same-screen
     1                                     unused

EnterNotify
     1     7                               code
     1                                     detail
          0     Ancestor
          1     Virtual
          2     Inferior
          3     Nonlinear
          4     NonlinearVirtual
     2     CARD16                          sequence number
     4     TIMESTAMP                       time
     4     WINDOW                          root
     4     WINDOW                          event
     4     WINDOW                          child
          0     None
     2     INT16                           root-x
     2     INT16                           root-y
     2     INT16                           event-x
     2     INT16                           event-y
     2     SETofKEYBUTMASK                 state
     1                                     mode
          0     Normal
          1     Grab
          2     Ungrab
     1                                     same-screen, focus
          #x01     focus (1 is True, 0 is False)
          #x02     same-screen (1 is True, 0 is False)
          #xFC     unused

LeaveNotify
     1     8                               code
     1                                     detail
          0     Ancestor
          1     Virtual
          2     Inferior
          3     Nonlinear
          4     NonlinearVirtual
     2     CARD16                          sequence number
     4     TIMESTAMP                       time
     4     WINDOW                          root
     4     WINDOW                          event
     4     WINDOW                          child
          0     None
     2     INT16                           root-x
     2     INT16                           root-y
     2     INT16                           event-x
     2     INT16                           event-y
     2     SETofKEYBUTMASK                 state
     1                                     mode
          0     Normal
          1     Grab
          2     Ungrab
     1                                     same-screen, focus
          #x01     focus (1 is True, 0 is False)
          #x02     same-screen (1 is True, 0 is False)
          #xFC     unused

FocusIn
     1     9                               code
     1                                     detail
          0     Ancestor
          1     Virtual
          2     Inferior
          3     Nonlinear
          4     NonlinearVirtual
          5     Pointer
          6     PointerRoot
          7     None
     2     CARD16                          sequence number
     4     WINDOW                          event
     1                                     mode
          0     Normal
          1     Grab
          2     Ungrab
          3     WhileGrabbed
     23                                    unused

FocusOut
     1     10                              code
     1                                     detail
          0     Ancestor
          1     Virtual
          2     Inferior
          3     Nonlinear
          4     NonlinearVirtual
          5     Pointer
          6     PointerRoot
          7     None
     2     CARD16                          sequence number
     4     WINDOW                          event
     1                                     mode
          0     Normal
          1     Grab
          2     Ungrab
          3     WhileGrabbed
     23                                    unused

KeymapNotify
     1     11                              code
     31    LISTofCARD8                     keys (byte for keycodes 0-7 is
                                           omitted)

Expose
     1     12                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          window
     2     CARD16                          x
     2     CARD16                          y
     2     CARD16                          width
     2     CARD16                          height
     2     CARD16                          count
     14                                    unused

GraphicsExposure
     1     13                              code
     1                                     unused
     2     CARD16                          sequence number
     4     DRAWABLE                        drawable
     2     CARD16                          x
     2     CARD16                          y
     2     CARD16                          width
     2     CARD16                          height
     2     CARD16                          minor-opcode
     2     CARD16                          count
     1     CARD8                           major-opcode
     11                                    unused

NoExposure
     1     14                              code
     1                                     unused
     2     CARD16                          sequence number
     4     DRAWABLE                        drawable
     2     CARD16                          minor-opcode
     1     CARD8                           major-opcode
     21                                    unused

VisibilityNotify
     1     15                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          window
     1                                     state
          0     Unobscured
          1     PartiallyObscured
          2     FullyObscured
     23                                    unused

CreateNotify
     1     16                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          parent
     4     WINDOW                          window
     2     INT16                           x
     2     INT16                           y
     2     CARD16                          width
     2     CARD16                          height
     2     CARD16                          border-width
     1     BOOL                            override-redirect
     9                                     unused

DestroyNotify
     1     17                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          event
     4     WINDOW                          window
     20                                    unused

UnmapNotify
     1     18                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          event
     4     WINDOW                          window
     1     BOOL                            from-configure
     19                                    unused

MapNotify
     1     19                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          event
     4     WINDOW                          window
     1     BOOL                            override-redirect
     19                                    unused

MapRequest
     1     20                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          parent
     4     WINDOW                          window
     20                                    unused

ReparentNotify
     1     21                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          event
     4     WINDOW                          window
     4     WINDOW                          parent
     2     INT16                           x
     2     INT16                           y
     1     BOOL                            override-redirect
     11                                    unused

ConfigureNotify
     1     22                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          event
     4     WINDOW                          window
     4     WINDOW                          above-sibling
          0     None
     2     INT16                           x
     2     INT16                           y
     2     CARD16                          width
     2     CARD16                          height
     2     CARD16                          border-width
     1     BOOL                            override-redirect
     5                                     unused

ConfigureRequest
     1     23                              code
     1                                     stack-mode
          0     Above
          1     Below
          2     TopIf
          3     BottomIf
          4     Opposite
     2     CARD16                          sequence number
     4     WINDOW                          parent
     4     WINDOW                          window
     4     WINDOW                          sibling
          0     None
     2     INT16                           x
     2     INT16                           y
     2     CARD16                          width
     2     CARD16                          height
     2     CARD16                          border-width
     2     BITMASK                         value-mask
          #x0001     x
          #x0002     y
          #x0004     width
          #x0008     height
          #x0010     border-width
          #x0020     sibling
          #x0040     stack-mode
     4                                     unused

GravityNotify
     1     24                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          event
     4     WINDOW                          window
     2     INT16                           x
     2     INT16                           y
     16                                    unused

ResizeRequest
     1     25                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          window
     2     CARD16                          width
     2     CARD16                          height
     20                                    unused

CirculateNotify
     1     26                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          event
     4     WINDOW                          window
     4     WINDOW                          unused
     1                                     place
          0     Top
          1     Bottom
     15                                    unused

CirculateRequest
     1     27                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          parent
     4     WINDOW                          window
     4                                     unused
     1                                     place
          0     Top
          1     Bottom
     15                                    unused

PropertyNotify
     1     28                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          window
     4     ATOM                            atom
     4     TIMESTAMP                       time
     1                                     state
          0     NewValue
          1     Deleted
     15                                    unused

SelectionClear
     1     29                              code
     1                                     unused
     2     CARD16                          sequence number
     4     TIMESTAMP                       time
     4     WINDOW                          owner
     4     ATOM                            selection
     16                                    unused

SelectionRequest
     1     30                              code
     1                                     unused
     2     CARD16                          sequence number
     4     TIMESTAMP                       time
          0     CurrentTime
     4     WINDOW                          owner
     4     WINDOW                          requestor
     4     ATOM                            selection
     4     ATOM                            target
     4     ATOM                            property
          0     None
     4                                     unused

SelectionNotify
     1     31                              code
     1                                     unused
     2     CARD16                          sequence number
     4     TIMESTAMP                       time
          0     CurrentTime
     4     WINDOW                          requestor
     4     ATOM                            selection
     4     ATOM                            target
     4     ATOM                            property
          0     None
     8                                     unused

ColormapNotify
     1     32                              code
     1                                     unused
     2     CARD16                          sequence number
     4     WINDOW                          window
     4     COLORMAP                        colormap
          0     None
     1     BOOL                            new
     1                                     state
          0     Uninstalled
          1     Installed
     18                                    unused

ClientMessage
     1     33                              code
     1     CARD8                           format
     2     CARD16                          sequence number
     4     WINDOW                          window
     4     ATOM                            type
     20                                    data

MappingNotify
     1     34                              code
     1                                     unused
     2     CARD16                          sequence number
     1                                     request
          0     Modifier
          1     Keyboard
          2     Pointer
     1     KEYCODE                         first-keycode
     1     CARD8                           count
     25                                    unused

Glossary

Access control list

    X maintains a list of hosts from which client programs can be run. By
    default, only programs on the local host and hosts specified in an initial
    list read by the server can use the display. Clients on the local host can
    change this access control list. Some server implementations can also
    implement other authorization mechanisms in addition to or in place of this
    mechanism. The action of this mechanism can be conditional based on the
    authorization protocol name and data received by the server at connection
    setup.

Active grab

    A grab is active when the pointer or keyboard is actually owned by the
    single grabbing client.

Ancestors

    If W is an  inferior of A, then A is an ancestor of W.

Atom

    An atom is a unique ID corresponding to a string name. Atoms are used to
    identify properties, types, and selections.

Background

    An  InputOutput window can have a background, which is defined as a pixmap.
    When regions of the window have their contents lost or invalidated, the
    server will automatically tile those regions with the background.

Backing store

    When a server maintains the contents of a window, the pixels saved off
    screen are known as a backing store.

Bit gravity

    When a window is resized, the contents of the window are not necessarily
    discarded. It is possible to request that the server relocate the previous
    contents to some region of the window (though no guarantees are made). This
    attraction of window contents for some location of a window is known as bit
    gravity.

Bit plane

    When a pixmap or window is thought of as a stack of bitmaps, each bitmap is
    called a bit plane or plane.

Bitmap

    A bitmap is a  pixmap of depth one.

Border

    An  InputOutput window can have a border of equal thickness on all four
    sides of the window. A pixmap defines the contents of the border, and the
    server automatically maintains the contents of the border. Exposure events
    are never generated for border regions.

Button grabbing

    Buttons on the pointer may be passively grabbed by a client. When the
    button is pressed, the pointer is then actively grabbed by the client.

Byte order

    For image (pixmap/bitmap) data, the server defines the byte order, and
    clients with different native byte ordering must swap bytes as necessary.
    For all other parts of the protocol, the client defines the byte order, and
    the server swaps bytes as necessary.

Children

    The children of a window are its first-level subwindows.

Client

    An application program connects to the window system server by some
    interprocess communication path, such as a TCP connection or a shared
    memory buffer. This program is referred to as a client of the window system
    server. More precisely, the client is the communication path itself; a
    program with multiple paths open to the server is viewed as multiple
    clients by the protocol. Resource lifetimes are controlled by connection
    lifetimes, not by program lifetimes.

Clipping region

    In a  graphics context, a bitmap or list of rectangles can be specified to
    restrict output to a particular region of the window. The image defined by
    the bitmap or rectangles is called a clipping region.

Colormap

    A colormap consists of a set of entries defining color values. The colormap
    associated with a window is used to display the contents of the window;
    each pixel value indexes the colormap to produce RGB values that drive the
    guns of a monitor. Depending on hardware limitations, one or more colormaps
    may be installed at one time, so that windows associated with those maps
    display with correct colors.

Connection

    The interprocess communication path between the server and client program
    is known as a connection. A client program typically (but not necessarily)
    has one connection to the server over which requests and events are sent.

Containment

    A window “contains” the pointer if the window is viewable and the  hotspot
    of the cursor is within a visible region of the window or a visible region
    of one of its inferiors. The border of the window is included as part of
    the window for containment. The pointer is “in” a window if the window
    contains the pointer but no inferior contains the pointer.

Coordinate system

    The coordinate system has the X axis horizontal and the Y axis vertical,
    with the origin [0, 0] at the upper left. Coordinates are integral, in
    terms of pixels, and coincide with pixel centers. Each window and pixmap
    has its own coordinate system. For a window, the origin is inside the
    border at the inside upper left.

Cursor

    A cursor is the visible shape of the pointer on a screen. It consists of a
     hotspot, a source bitmap, a shape bitmap, and a pair of colors. The cursor
    defined for a window controls the visible appearance when the pointer is in
    that window.

Depth

    The depth of a window or pixmap is the number of bits per pixel that it
    has. The depth of a graphics context is the depth of the drawables it can
    be used in conjunction with for graphics output.

Device

    Keyboards, mice, tablets, track-balls, button boxes, and so on are all
    collectively known as input devices. The core protocol only deals with two
    devices, “the keyboard” and “the pointer.”

DirectColor

    DirectColor is a class of colormap in which a pixel value is decomposed
    into three separate subfields for indexing. The first subfield indexes an
    array to produce red intensity values. The second subfield indexes a second
    array to produce blue intensity values. The third subfield indexes a third
    array to produce green intensity values. The RGB values can be changed
    dynamically.

Display

    A server, together with its screens and input devices, is called a display.

Drawable

    Both windows and pixmaps can be used as sources and destinations in
    graphics operations. These windows and pixmaps are collectively known as
    drawables. However, an  InputOnly window cannot be used as a source or
    destination in a graphics operation.

Event

    Clients are informed of information asynchronously by means of events.
    These events can be generated either asynchronously from devices or as side
    effects of client requests. Events are grouped into types. The server never
    sends events to a client unless the client has specifically asked to be
    informed of that type of event. However, other clients can force events to
    be sent to other clients. Events are typically reported relative to a
    window.

Event mask

    Events are requested relative to a window. The set of event types that a
    client requests relative to a window is described by using an event mask.

Event synchronization

    There are certain race conditions possible when demultiplexing device
    events to clients (in particular deciding where pointer and keyboard events
    should be sent when in the middle of window management operations). The
    event synchronization mechanism allows synchronous processing of device
    events.

Event propagation

    Device-related events propagate from the source window to ancestor windows
    until some client has expressed interest in handling that type of event or
    until the event is discarded explicitly.

Event source

    The window the pointer is in is the source of a device-related event.

Exposure event

    Servers do not guarantee to preserve the contents of windows when windows
    are obscured or reconfigured. Exposure events are sent to clients to inform
    them when contents of regions of windows have been lost.

Extension

    Named extensions to the core protocol can be defined to extend the system.
    Extension to output requests, resources, and event types are all possible
    and are expected.

Focus window

    The focus window is another term for the  input focus.

Font

    A font is a matrix of glyphs (typically characters). The protocol does no
    translation or interpretation of character sets. The client simply
    indicates values used to index the glyph array. A font contains additional
    metric information to determine interglyph and interline spacing.

GC, GContext

    GC and gcontext are abbreviations for  graphics context.

Glyph

    A glyph is an image, typically of a character, in a font.

Grab

    Keyboard keys, the keyboard, pointer buttons, the pointer, and the server
    can be grabbed for exclusive use by a client. In general, these facilities
    are not intended to be used by normal applications but are intended for
    various input and window managers to implement various styles of user
    interfaces.

Graphics context

    Various information for graphics output is stored in a graphics context
    such as foreground pixel, background pixel, line width,  clipping region,
    and so on. A graphics context can only be used with drawables that have the
    same root and the same depth as the graphics context.

Gravity

    See  bit gravity and  window gravity.

GrayScale

    GrayScale can be viewed as a degenerate case of  PseudoColor, in which the
    red, green, and blue values in any given colormap entry are equal, thus
    producing shades of gray. The gray values can be changed dynamically.

Hotspot

    A cursor has an associated hotspot that defines the point in the cursor
    corresponding to the coordinates reported for the pointer.

Identifier

    An identifier is a unique value associated with a resource that clients use
    to name that resource. The identifier can be used over any connection.

Inferiors

    The inferiors of a window are all of the subwindows nested below it: the
    children, the children's children, and so on.

Input focus

    The input focus is normally a window defining the scope for processing of
    keyboard input. If a generated keyboard event would normally be reported to
    this window or one of its inferiors, the event is reported normally.
    Otherwise, the event is reported with respect to the focus window. The
    input focus also can be set such that all keyboard events are discarded and
    such that the focus window is dynamically taken to be the root window of
    whatever screen the pointer is on at each keyboard event.

Input manager

    Control over keyboard input is typically provided by an input manager
    client.

InputOnly window

    An InputOnly window is a window that cannot be used for graphics requests. 
    InputOnly windows are invisible and can be used to control such things as
    cursors, input event generation, and grabbing. InputOnly windows cannot
    have InputOutput windows as inferiors.

InputOutput window

    An InputOutput window is the normal kind of opaque window, used for both
    input and output. InputOutput windows can have both InputOutput and 
    InputOnly windows as inferiors.

Key grabbing

    Keys on the keyboard can be passively grabbed by a client. When the key is
    pressed, the keyboard is then actively grabbed by the client.

Keyboard grabbing

    A client can actively grab control of the keyboard, and key events will be
    sent to that client rather than the client the events would normally have
    been sent to.

Keysym

    An encoding of a symbol on a keycap on a keyboard.

Mapped

    A window is said to be mapped if a map call has been performed on it.
    Unmapped windows and their inferiors are never viewable or visible.

Modifier keys

    Shift, Control, Meta, Super, Hyper, Alt, Compose, Apple, CapsLock,
    ShiftLock, and similar keys are called modifier keys.

Monochrome

    Monochrome is a special case of  StaticGray in which there are only two
    colormap entries.

Obscure

    A window is obscured if some other window obscures it. Window A obscures
    window B if both are viewable  InputOutput windows, A is higher in the
    global stacking order, and the rectangle defined by the outside edges of A
    intersects the rectangle defined by the outside edges of B. Note the
    distinction between obscure and occludes. Also note that window borders are
    included in the calculation and that a window can be obscured and yet still
    have visible regions.

Occlude

    A window is occluded if some other window occludes it. Window A occludes
    window B if both are mapped, A is higher in the global stacking order, and
    the rectangle defined by the outside edges of A intersects the rectangle
    defined by the outside edges of B. Note the distinction between occludes
    and obscures. Also note that window borders are included in the
    calculation.

Padding

    Some padding bytes are inserted in the data stream to maintain alignment of
    the protocol requests on natural boundaries. This increases ease of
    portability to some machine architectures.

Parent window

    If C is a  child of P, then P is the parent of C.

Passive grab

    Grabbing a key or button is a passive grab. The grab activates when the key
    or button is actually pressed.

Pixel value

    A pixel is an N-bit value, where N is the number of bit planes used in a
    particular window or pixmap (that is, N is the depth of the window or
    pixmap). For a window, a pixel value indexes a colormap to derive an actual
    color to be displayed.

Pixmap

    A pixmap is a three-dimensional array of bits. A pixmap is normally thought
    of as a two-dimensional array of pixels, where each pixel can be a value
    from 0 to (2^N)-1 and where N is the depth (z axis) of the pixmap. A pixmap
    can also be thought of as a stack of N bitmaps.

Plane

    When a pixmap or window is thought of as a stack of bitmaps, each bitmap is
    called a plane or bit plane.

Plane mask

    Graphics operations can be restricted to only affect a subset of bit planes
    of a destination. A plane mask is a bit mask describing which planes are to
    be modified. The plane mask is stored in a graphics context.

Pointer

    The pointer is the pointing device attached to the cursor and tracked on
    the screens.

Pointer grabbing

    A client can actively grab control of the pointer. Then button and motion
    events will be sent to that client rather than the client the events would
    normally have been sent to.

Pointing device

    A pointing device is typically a mouse, tablet, or some other device with
    effective dimensional motion. There is only one visible cursor defined by
    the core protocol, and it tracks whatever pointing device is attached as
    the pointer.

Property

    Windows may have associated properties, which consist of a name, a type, a
    data format, and some data. The protocol places no interpretation on
    properties. They are intended as a general-purpose naming mechanism for
    clients. For example, clients might use properties to share information
    such as resize hints, program names, and icon formats with a window
    manager.

Property list

    The property list of a window is the list of properties that have been
    defined for the window.

PseudoColor

    PseudoColor is a class of colormap in which a pixel value indexes the
    colormap to produce independent red, green, and blue values; that is, the
    colormap is viewed as an array of triples (RGB values). The RGB values can
    be changed dynamically.

Redirecting control

    Window managers (or client programs) may want to enforce window layout
    policy in various ways. When a client attempts to change the size or
    position of a window, the operation may be redirected to a specified client
    rather than the operation actually being performed.

Reply

    Information requested by a client program is sent back to the client with a
    reply. Both events and replies are multiplexed on the same connection. Most
    requests do not generate replies, although some requests generate multiple
    replies.

Request

    A command to the server is called a request. It is a single block of data
    sent over a connection.

Resource

    Windows, pixmaps, cursors, fonts, graphics contexts, and colormaps are
    known as resources. They all have unique identifiers associated with them
    for naming purposes. The lifetime of a resource usually is bounded by the
    lifetime of the connection over which the resource was created.

RGB values

    Red, green, and blue (RGB) intensity values are used to define color. These
    values are always represented as 16-bit unsigned numbers, with 0 being the
    minimum intensity and 65535 being the maximum intensity. The server scales
    the values to match the display hardware.

Root

    The root of a pixmap, colormap, or graphics context is the same as the root
    of whatever drawable was used when the pixmap, colormap, or graphics
    context was created. The root of a window is the root window under which
    the window was created.

Root window

    Each screen has a root window covering it. It cannot be reconfigured or
    unmapped, but it otherwise acts as a full-fledged window. A root window has
    no parent.

Save set

    The save set of a client is a list of other clients' windows that, if they
    are inferiors of one of the client's windows at connection close, should
    not be destroyed and that should be remapped if currently unmapped. Save
    sets are typically used by window managers to avoid lost windows if the
    manager terminates abnormally.

Scanline

    A scanline is a list of pixel or bit values viewed as a horizontal row (all
    values having the same y coordinate) of an image, with the values ordered
    by increasing x coordinate.

Scanline order

    An image represented in scanline order contains scanlines ordered by
    increasing y coordinate.

Screen

    A server can provide several independent screens, which typically have
    physically independent monitors. This would be the expected configuration
    when there is only a single keyboard and pointer shared among the screens.

Selection

    A selection can be thought of as an indirect property with dynamic type;
    that is, rather than having the property stored in the server, it is
    maintained by some client (the “owner”). A selection is global in nature
    and is thought of as belonging to the user (although maintained by
    clients), rather than as being private to a particular window subhierarchy
    or a particular set of clients. When a client asks for the contents of a
    selection, it specifies a selection “target type”. This target type can be
    used to control the transmitted representation of the contents. For
    example, if the selection is “the last thing the user clicked on” and that
    is currently an image, then the target type might specify whether the
    contents of the image should be sent in XY format or Z format. The target
    type can also be used to control the class of contents transmitted; for
    example, asking for the “looks” (fonts, line spacing, indentation, and so
    on) of a paragraph selection rather than the text of the paragraph. The
    target type can also be used for other purposes. The protocol does not
    constrain the semantics.

Server

    The server provides the basic windowing mechanism. It handles connections
    from clients, multiplexes graphics requests onto the screens, and
    demultiplexes input back to the appropriate clients.

Server grabbing

    The server can be grabbed by a single client for exclusive use. This
    prevents processing of any requests from other client connections until the
    grab is completed. This is typically only a transient state for such things
    as rubber-banding, pop-up menus, or to execute requests indivisibly.

Sibling

    Children of the same parent window are known as sibling windows.

Stacking order

    Sibling windows may stack on top of each other. Windows above other windows
    both obscure and occlude those lower windows. This is similar to paper on a
    desk. The relationship between sibling windows is known as the stacking
    order.

StaticColor

    StaticColor can be viewed as a degenerate case of  PseudoColor in which the
    RGB values are predefined and read-only.

StaticGray

    StaticGray can be viewed as a degenerate case of  GrayScale in which the
    gray values are predefined and read-only. The values are typically linear
    or near-linear increasing ramps.

Stipple

    A stipple pattern is a bitmap that is used to tile a region that will serve
    as an additional clip mask for a fill operation with the foreground color.

String Equivalence

    Two ISO Latin-1 STRING8 values are considered equal if they are the same
    length and if corresponding bytes are either equal or are equivalent as
    follows: decimal values 65 to 90 inclusive (characters “A” to “Z”) are
    pairwise equivalent to decimal values 97 to 122 inclusive (characters “a”
    to “z”), decimal values 192 to 214 inclusive (characters “A grave” to “O
    diaeresis”) are pairwise equivalent to decimal values 224 to 246 inclusive
    (characters “a grave” to “o diaeresis”), and decimal values 216 to 222
    inclusive (characters “O oblique” to “THORN”) are pairwise equivalent to
    decimal values 246 to 254 inclusive (characters “o oblique” to “thorn”).

Tile

    A pixmap can be replicated in two dimensions to tile a region. The pixmap
    itself is also known as a tile.

Timestamp

    A timestamp is a time value, expressed in milliseconds. It typically is the
    time since the last server reset. Timestamp values wrap around (after about
    49.7 days). The server, given its current time is represented by timestamp
    T, always interprets timestamps from clients by treating half of the
    timestamp space as being earlier in time than T and half of the timestamp
    space as being later in time than T. One timestamp value (named CurrentTime
    ) is never generated by the server. This value is reserved for use in
    requests to represent the current server time.

TrueColor

    TrueColor can be viewed as a degenerate case of  DirectColor in which the
    subfields in the pixel value directly encode the corresponding RGB values;
    that is, the colormap has predefined read-only RGB values. The values are
    typically linear or near-linear increasing ramps.

Type

    A type is an arbitrary atom used to identify the interpretation of property
    data. Types are completely uninterpreted by the server and are solely for
    the benefit of clients.

Viewable

    A window is viewable if it and all of its ancestors are mapped. This does
    not imply that any portion of the window is actually visible. Graphics
    requests can be performed on a window when it is not viewable, but output
    will not be retained unless the server is maintaining backing store.

Visible

    A region of a window is visible if someone looking at the screen can
    actually see it; that is, the window is viewable and the region is not
    occluded by any other window.

Window gravity

    When windows are resized, subwindows may be repositioned automatically
    relative to some position in the window. This attraction of a subwindow to
    some part of its parent is known as window gravity.

Window manager

    Manipulation of windows on the screen and much of the user interface
    (policy) is typically provided by a window manager client.

XYFormat

    The data for a pixmap is said to be in XY format if it is organized as a
    set of bitmaps representing individual bit planes, with the planes
    appearing from most-significant to least-significant in bit order.

ZFormat

    The data for a pixmap is said to be in Z format if it is organized as a set
    of pixel values in scanline order.

Index

A

Access control list, ChangeHosts, Glossary
Active grab, Glossary
    keyboard, GrabKeyboard
    pointer, GrabPointer, ChangeActivePointerGrab
AllocColor, AllocColor
AllocColorCells, AllocColorCells
AllocColorPlanes, AllocColorPlanes
AllocNamedColor, AllocNamedColor
AllowEvents, AllowEvents
Ancestors, Glossary
Atom, InternAtom, Glossary
    predefined, Predefined Atoms, Predefined Atoms
Authorization, Connection Initiation

B

Background, CreateWindow, ClearArea, Glossary
Backing store, Screen Information, Glossary
Bell, Bell
Bit
    gravity, ConfigureWindow, Glossary
    plane, Glossary
Bitmap, Glossary
    format, Server Information
Border, Glossary
Button
    grabbing, GrabButton, Glossary
    number, Pointers
ButtonPress, Input Device events
ButtonRelease, Input Device events
Byte order, Connection Initiation, Glossary

C

ChangeActivePointerGrab, ChangeActivePointerGrab
ChangeGC, ChangeGC
ChangeHosts, ChangeHosts
ChangeKeyboardControl, ChangeKeyboardControl
ChangeKeyboardMapping, ChangeKeyboardMapping
ChangePointerControl, ChangePointerControl
ChangeProperty, ChangeProperty
ChangeSaveSet, ChangeSaveSet
ChangeWindowAttributes, ChangeWindowAttributes
Children, QueryTree, Glossary
CirculateNotify, CirculateNotify
CirculateRequest, CirculateRequest
CirculateWindow, CirculateWindow
ClearArea, ClearArea
Client, Glossary
ClientMessage, ClientMessage
Clipping region, CreateGC, Glossary
CloseFont, CloseFont
Colormap, CreateColormap, Glossary
    types, Visual Information
ColormapNotify, ColormapNotify
ConfigureNotify, ConfigureNotify
ConfigureRequest, ConfigureRequest
ConfigureWindow, ConfigureWindow
Connection, Connection Setup, Glossary
    closing, Connection Close
    opening, Connection Initiation
Containment, Glossary
ConvertSelection, ConvertSelection
Coordinate system, Glossary
    translating, Glossary
CopyArea, CopyArea
CopyColormapAndFree, CopyColormapAndFree
CopyGC, CopyGC
CopyPlane, CopyPlane
CreateColormap, CreateColormap
CreateCursor, CreateCursor
CreateGC, CreateGC
CreateGlyphCursor, CreateGlyphCursor
CreateNotify, CreateNotify
CreatePixmap, CreatePixmap
CreateWindow, CreateWindow
CurrentTime, Glossary
Cursor, CreateCursor, Glossary

D

DeleteProperty, DeleteProperty
Depth, Glossary
DestroyNotify, DestroyNotify
DestroySubwindows, DestroySubwindows
DestroyWindow, DestroyWindow
Device, Glossary
DirectColor, Glossary
Display, Glossary
Drawable, Glossary

E

EnterNotify, Pointer Window events
Error Codes
    Access, Errors
    Alloc, Errors
    Atom, Errors
    Colormap, Errors
    Cursor, Errors
    Drawable, Errors
    extensions, Error Format
    Font, Errors
    GContext, Errors
    IDChoice, Errors
    Implementation, Errors
    Length, Errors
    Match, Errors
    Name, Errors
    Pixmap, Errors
    Request, Errors
    Value, Errors
    Window, Errors
Error report
    encoding, Errors
    format, Error Format
Event, Events, Glossary
    encoding, Events
    Exposure, Expose, Glossary
    extension, Event Format
    format, Event Format
    mask, CreateWindow, Glossary
    propagation, CreateWindow, Glossary
    sending, SendEvent
    source, Input Device events, Glossary
    synchronization, Glossary
Expose, Expose
Extension, Request Format, Glossary
    error codes, Error Format
    event, Event Format
    listing, ListExtensions
    querying, QueryExtension

F

Fill rule, CreateGC
FillPoly, FillPoly
Focus window, Glossary
FocusIn, Input Focus events
FocusOut, Input Focus events
Font, OpenFont, Glossary
ForceScreenSaver, ForceScreenSaver
FreeColormap, FreeColormap
FreeColors, FreeColors
FreeCursor, FreeCursor
FreeGC, FreeGC
FreePixmap, FreePixmap

G

GC, Glossary
    (see also Graphics context)
GContext, Glossary
    (see also Graphics context)
GetAtomName, GetAtomName
GetFontPath, GetFontPath
GetGeometry, GetGeometry
GetImage, GetImage
GetInputFocus, GetInputFocus
GetKeyboardControl, GetKeyboardControl
GetKeyboardMapping, GetKeyboardMapping
GetModifierMapping, GetModifierMapping
GetMotionEvents, GetMotionEvents
GetPointerControl, GetPointerControl
GetPointerMapping, GetPointerMapping
GetProperty, GetProperty
GetScreenSaver, GetScreenSaver
GetSelectionOwner, GetSelectionOwner
GetWindowAttributes, GetWindowAttributes
Glyph, Glossary
Grab, Glossary
    (see also Active grab)
    (see also Passive grab)
GrabButton, GrabButton
GrabKey, GrabKey
GrabKeyboard, GrabKeyboard
GrabPointer, GrabPointer
GrabServer, GrabServer
Graphics context, CreateGC, Glossary
GraphicsExposure, GraphicsExposure
Gravity, ConfigureWindow, Glossary
GravityNotify, GravityNotify
GrayScale, Glossary

H

Hotspot, Glossary

I

Identifier, Glossary
ImageText16, ImageText16
ImageText8, ImageText8
Inferiors, Glossary
Input device
    events, Input Device events
Input focus, SetInputFocus, Glossary
    events, Input Focus events
Input manager, Glossary
InstallColormap, InstallColormap
InternAtom, InternAtom

K

Key
    grabbing, GrabKey, Glossary
    modifier (see Modifier keys)
Keyboard, Keyboards
    grabbing, GrabKeyboard, Glossary
Keycode, Keyboards, Server Information
KeymapNotify, KeymapNotify
KeyPress, Keyboards, Input Device events
KeyRelease, Input Device events
Keysym, Keyboards, ChangeKeyboardMapping, GetKeyboardMapping, KEYSYM Encoding, 
Glossary
    Unicode, Unicode KEYSYMs
KillClient, KillClient

L

LeaveNotify, Pointer Window events
Line
    drawing, CreateGC, PolyLine
ListExtensions, ListExtensions
ListFonts, ListFonts
ListFontsWithInfo, ListFontsWithInfo
ListHosts, ListHosts
ListInstalledColormaps, ListInstalledColormaps
ListProperties, ListProperties
LookupColor, LookupColor

M

MapNotify, MapNotify
Mapped window, MapWindow, MapNotify, Glossary
MappingNotify, MappingNotify
MapRequest, MapRequest
MapSubwindows, MapSubwindows
MapWindow, MapWindow
modifier
    group, Keyboards
    Lock, Keyboards
    NumLock, Keyboards
Modifier keys, SetModifierMapping, GetModifierMapping, Glossary
Monochrome, Glossary
MotionNotify, Input Device events

N

NoExposure, NoExposure
NoOperation, NoOperation

O

Obscure, Glossary
Occlude, Glossary
Opcode
    major, Request Format
    minor, Request Format
OpenFont, OpenFont

P

Padding, Syntactic Conventions, Glossary
Passive grab, Glossary
    keyboard, GrabKey
    pointer, GrabButton
Pixel value, Visual Information, Glossary
Pixmap, Glossary
    format, Server Information
Plane, Glossary
    mask, CreateGC, Glossary
Pointer, Glossary
    grabbing, GrabPointer, Glossary
Pointing device, Glossary
PolyArc, PolyArc
PolyFillArc, PolyFillArc
PolyFillRectangle, PolyFillRectangle
PolyLine, PolyLine
PolyPoint, PolyPoint
PolyRectangle, PolyRectangle
PolySegment, PolySegment
PolyText16, PolyText16
PolyText8, PolyText8
Property, ChangeProperty, Glossary
Property list, Glossary
PropertyNotify, PropertyNotify
PseudoColor, Glossary
PutImage, PutImage

Q

QueryBestSize, QueryBestSize
QueryColors, QueryColors
QueryExtension, QueryExtension
QueryFont, QueryFont
QueryKeymap, QueryKeymap
QueryPointer, QueryPointer
QueryTextExtents, QueryTextExtents
QueryTree, QueryTree

R

RecolorCursor, RecolorCursor
Redirecting control, Glossary
ReparentNotify, ReparentNotify
ReparentWindow, ReparentWindow
Reply, Glossary
    format, Reply Format
Request, Glossary
    encoding, Requests
    format, Request Format
    length, Request Format, Server Information
ResizeRequest, ResizeRequest
Resource, Glossary
    ID, Server Information
RGB values, Glossary
Root, Glossary
RotateProperties, RotateProperties

S

Save set, Glossary
Scanline, Glossary
Scanline order, Glossary
Screen, Screen Information, Glossary
Selection, SetSelectionOwner, Glossary
SelectionClear, SelectionClear
SelectionNotify, SelectionNotify
SelectionRequest, SelectionRequest
SendEvent, SendEvent
Sequence number, Request Format
Server, Glossary
    grabbing, GrabServer, Glossary
SetAccessControl, SetAccessControl
SetClipRectangles, SetClipRectangles
SetCloseDownMode, SetCloseDownMode
SetDashes, SetDashes
SetFontPath, SetFontPath
SetInputFocus, SetInputFocus
SetModifierMapping, SetModifierMapping
SetPointerMapping, SetPointerMapping
SetScreenSaver, SetScreenSaver
SetSelectionOwner, SetSelectionOwner
Sibling, Glossary
Stacking order, Glossary
StaticColor, Glossary
StaticGray, Glossary
Stipple, Glossary
StoreColors, StoreColors
StoreNamedColor, StoreNamedColor
String Equivalence, Glossary

T

Tile, Glossary
Timestamp, Glossary
TranslateCoordinates, TranslateCoordinates
TrueColor, Glossary
Type, Glossary
Types
    ARC, Common Types
    ATOM, Common Types
    BITGRAVITY, Common Types
    BITMASK, Common Types
    BOOL, Common Types
    BUTMASK, Common Types
    BUTTON, Common Types
    BYTE, Common Types
    CARD16, Common Types
    CARD32, Common Types
    CARD8, Common Types
    CHAR2B, Common Types
    COLORMAP, Common Types
    CURSOR, Common Types
    DEVICEEVENT, Common Types
    DRAWABLE, Common Types
    encoding, Common Types
    EVENT, Common Types
    FONT, Common Types
    FONTABLE, Common Types
    GCONTEXT, Common Types
    HOST, Common Types, ChangeHosts
    INT16, Common Types
    INT32, Common Types
    INT8, Common Types
    KEYBUTMASK, Common Types
    KEYCODE, Common Types, Keyboards, Server Information
    KEYMASK, Common Types
    KEYSYM, Common Types, Keyboards, KEYSYM Encoding
    LISTofFOO, Common Types
    LISTofVALUE, Common Types
    OR, Common Types
    PIXMAP, Common Types
    POINT, Common Types
    POINTEREVENT, Common Types
    RECTANGLE, Common Types
    STRING16, Common Types
    STRING8, Common Types
    TIMESTAMP, Common Types
    VALUE, Common Types
    VISUALID, Common Types
    WINDOW, Common Types
    WINGRAVITY, Common Types

U

UngrabButton, UngrabButton
UngrabKey, UngrabKey
UngrabKeyboard, UngrabKeyboard
UngrabPointer, UngrabPointer
UngrabServer, UngrabServer
UninstallColormap, UninstallColormap
UnmapNotify, UnmapNotify
UnmapSubwindows, UnmapSubwindows
UnmapWindow, UnmapWindow

V

Viewable, Glossary
VisibilityNotify, VisibilityNotify
Visible, Glossary
Visual
    information, Visual Information

W

WarpPointer, WarpPointer
Winding rule, CreateGC
Window
    children, Glossary
    gravity, ConfigureWindow, Glossary
    InputOnly, Glossary
    InputOutput, Glossary
    manager, Glossary
    parent, Glossary
    root, Glossary

X

XYFormat, Server Information, Glossary

Z

ZFormat, Server Information, Glossary

