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# EDITOR COMMANDS

Most editing commands are available in the menu, but definitely key-bindings and Mouse actions are the most effective way to build and arrange schematics, so you should learn at least the most important ones.

The basic principle in XSCHEM is that first you select something in the circuit then you decide what to do with the selection. For example, if you need to change an object property you first select it (mouse click) and then you press the edit property (`'q'`) key. It you need to move together multiple objects you select them (by area or using multiple mouse clicks with the `Shift` key), then you press the move (`'m'`) key.

### EDITOR COMMAND CHEATSHEET

This list is available in XSCHEM in the `Help` menu

                            XSCHEM MOUSE BINDINGS
    ----------------------------------------------------------------------
    LeftButton              Clear selection and select a graphic object
                            (line, rectangle, symbol, wire)
                            if clicking on blank area: clear selection

    shift + LeftButton      Select without clearing previous selection

    ctrl + LeftButton       if an 'url' or 'tclcommand' property is defined on
                            selected instance open the url or execute the
                            tclcommand

    LeftButton drag         Select objects by area, clearing previous selection
                            "[shift] left button drag" and "[shift] ctrl-left
                            button drag" commands are swapped if enable_stretch
                            is set.

    Ctrl + LeftButton drag  Select objects by area to perform a
                            subsequent   'stretch'  move operation

    shift + LeftButton drag Select objects by area, without clearing
                            previous selection

    Shift +                 Select objects by area without unselecting
    Ctrl + LeftButton drag  to perform a subsequent   'stretch'  move operation

    Shift + Right Button    Select all connected wires/labels/pins

    Ctrl + Right Button     Select all connected wires/labels/pins, stopping at
                            wire junctions

    Alt + RightButton       Cut wire at mouse position (creates 2 adjacent wires)
                            aligns the cut point to current snap setting.

    Alt + Shift + RightButton
                            Cut wire at mouse position (creates 2 adjacent wires)
                            does not align cut point to current snap setting.

    Mouse Wheel             Zoom in / out

    MidButton drag          Pan viewable area

    Alt + LeftButton        Unselect selected object

    Alt + LeftButton drag
                            Unselect objects by area

    RightButton             Context menu

    Shift + RightButton     Select object under the mouse and if label/pin
                            select attached nets

    Ctrl + RightButton      Select object under the mouse and if label/pin
                            select attached nets up to net junctions

    LeftButton Double click Terminate Polygon placement
                            Edit object attributes

                            XSCHEM KEY BINDINGS
    ----------------------------------------------------------------------
    -          BackSpace    Back to parent schematic
    -          Delete       Delete selected objects
    -          Insert       Insert element from library
    -          Escape       Abort, redraw, unselect
    ctrl       Enter        Confirm closing dialog boxes
    -          Down         Move down
    -          Left         Move right
    -          Right        Move left
    -          Up           Move up
    ctrl       Left         Previous tab (if tabbed interface enabled)
    ctrl       Right        Next tab (if tabbed interface enabled)
    -           '\'         Toggle fullscreen
    -           '!'         Break selected wires at any wire or component pin
                            connection
    -           ' '         Pan schematic
    -           ' '         When drawing lines or wires toggle between
                            manhattan H-V, manhattan V-H or oblique path.
    -           '#'         Highlight components with duplicated name (refdes)
    ctrl        '#'         Rename components with duplicated name (refdes)
    -           '5'         View only probes
    ctrl        '0-9'       set current layer (4 -13)
                '0'         set selected net or label to logic value '0'
                '1'         set selected net or label to logic value '1'
                '2'         set selected net or label to logic value 'X'
                '3'         set selected net or label to logic value 'Z'
                '4'         toggle selected net or label: 1->0, 0->1, X->X
    -           'a'         Make symbol from pin list of current schematic
    ctrl        'a'         Select all
    shift       'A'         Toggle show netlist
    -           'b'         Merge file
    Shift       'B'         Edit/add header/license metadata to the schematic/symbol file.
    ctrl        'b'         Toggle show text in symbol
    alt         'b'         Toggle show symbol details / only bounding boxes
    -           'c'         Copy selected objects, 'c' and 'alt-c' commands are swapped if enable_stretch is set
    Alt         'c'         Copy selected objects, insert wires when separating touching instance pins/wires
    ctrl        'c'         Save to clipboard
    shift       'C'         Start arc placement
    shift+ctrl  'C'         Start circle placement
    alt         'C'         Toggle dim/brite background with rest of layers
    shift       'D'         Delete files
    ctrl        'e'         Back to parent schematic
    -           'e'         Descend to schematic
    alt         'e'         Edit selected schematic in a new window
                '\'         Toggle Full screen
    shift       'F'         Flip
    alt         'f'         Flip objects around their anchor points
    ctrl        'f'         Find/select by substring or regexp
    -           'f'         Full zoom
    shift+ctrl  'F'         Zoom full selected elements
    shift       'G'         Double snap factor
    -           'g'         Half snap factor
    ctrl        'g'         Set snap factor
    alt         'g'         Hilight selected nets and send to gaw waveform viewer
    -           'h'         Constrained horizontal move/copy of objects
    alt         'h'         create symbol pins from schematic pins
    ctrl        'h'         Follow http link or execute command (url, tclcommand properties)
    shift       'H'         Attach net labels to selected instance
    ctrl+shift  'H'         Make schematic and symbol from selected components
    -           'i'         Descend to  symbol
    alt         'i'         Edit selected symbol in a new window
    alt+shift   'J'         Create labels with 'i' prefix from highlighted nets/pins
    alt         'j'         Create labels without 'i' prefix from highlighted nets/pins
    ctrl        'j'         Create ports from highlight nets
    alt+ctrl    'j'         Print list of highlighted nets/pins with label expansion
    shift       'J'         create xplot plot file for ngspice in simulation directory
                            (just type xplot in ngspice)
    -           'j'         Print list of highlighted nets/pins
    -           'k'         Hilight selected nets
    ctrl+shift  'K'         highlight net passing through elements with 'propag' property set on pins
    shift       'K'         Unhilight all nets
    ctrl        'k'         Unhilight selected nets
    alt         'k'         Select all nets attached to selected wire / label / pin.
    -           'l'         Start line
    ctrl        'l'         Make schematic view from selected symbol
    alt+shift   'l'         add lab_wire.sym to schematic
    alt         'l'         add lab_pin.sym to schematic
    ctrl+shift  'o'         Load most recent schematic
    ctrl        'o'         Load schematic
    -           'm'         Move selected objects. 'm' and 'ctrl-m' commands are swapped if enable_stretch is set
    ctrl        'm'         Move selected objects, stretching wires attached to them
    Alt         'm'         Move selected objects, insert wires when separating touching instance pins/wires
    shift       'M'         Move selected objects, insert wires when separating touching instance pins/wires
                            Stretch wires that land on selected instance pins.
    shift       'N'         Top level only netlist
    -           'n'         Hierarchical Netlist
    ctrl        'n'         Clear schematic
    ctrl+shift  'N'         Clear symbol
    shift       'O'         Toggle Light / Dark colorscheme
    ctrl        'o'         Load schematic
    -           'p'         Place polygon. Operation ends by placing last point over first.
    alt         'p'         Add symbol pin
    ctrl        'p'         Pan schematic view
    shift       'P'         Pan, other way to.
    alt         'q'         Edit schematic file (dangerous!)
    -           'q'         Edit prop
    shift       'Q'         Edit prop with vim
    ctrl+shift  'Q'         View prop
    ctrl        'q'         Exit XSCHEM
    alt         'r'         Rotate objects around their anchor points
    shift       'R'         Rotate
    -           'r'         Start rect
    shift       'S'         Change element order
    ctrl+shift  'S'         Save  as schematic
                's'         run simulation (asks confirmation)
    ctrl        's'         Save schematic
    alt         's'         Reload current schematic from disk
    ctrl+alt    's'         Save-as symbol
    -           't'         Place text
    alt         'u'         Align to current grid selected objects
    shift       'U'         Redo
    -           'u'         Undo
    -           'v'         Constrained vertical move/copy of objects
    ctrl        'v'         Paste from clipboard
    shift       'V'         Toggle spice/vhdl/verilog netlist
    -           'w'         Place wire
    ctrl        'w'         close current schematic
    shift       'W'         Place wire, snapping to closest pin or net endpoint
    ctrl        'x'         Cut into clipboard
    -           'x'         New cad session
    shift       'X'         Highlight discrepancies between object ports and attached nets
    -           'y'         Toggle stretching wires
    -           'z'         Zoom box
    shift       'Z'         Zoom in
    ctrl        'z'         Zoom out
    -           '?'         Help
    -           '&         Join / break / collapse wires
    shift       '*'         Postscript/pdf print
    ctr+shift   '*'         Xpm/png print
    alt+shift   '*'         Svg print
                '-'         dim colors
    ctrl        '-'         Test mode: change line width
    ctrl        '+'         Test mode: change line width
                '+'         brite colors
    -           '_'         Toggle change line width
    -           '%'         Toggle draw grid
    ctrl        '='         Toggle fill rectangles
    -           '$'         Toggle pixmap  saving
    ctrl        '$'         Toggle use XCopyArea vs drawing primitives for drawing the screen
    -           ':'         Toggle flat netlist

### KEYBIND CUSTOMIZATION

changes to default keybindings may be placed in the `~/.xschem/xschemrc` file as in the following examples:

    ## replace Ctrl-d with Escape (so you won't kill the program :-))
    set replace_key(Control-d) Escape
    ## swap w and W keybinds; Always specify Shift for capital letters
    set replace_key(Shift-W) w
    set replace_key(w) Shift-W

### SELECT OBJECTS

Objects can be selected by clicking the left mouse button when the pointer is very close to the object. For rectangle objects the best point to select it is the internal side, close to one of the corners. More objects can be selected by pressing the `Shift` key and clicking another object. Once objects are selected they can be copied (`c` key), moved (`m` key), deleted (`Delete` key) or attributes changed (`q` key).
Objects can also be selected by area, by dragging with the left mouse button pressed a rectangle around the objects you want to select.

### RESIZE OBJECTS

All Xschem base objects can be resized. For lines, rectangles, polygons you need to drag the mouse with left button pressed and Ctrl key pressed over one vertex/endpoint.

After releasing the mouse button the object will become selected and a subsequent move operation (`m` key) will move the selected vertex/endpoint.

More objects can be rezized. You can add vertex/endpoints by pressing Ctrl and Shift and dragging the mouse to enclose another vertex/endpoint. After selecting all desired elements pressing the `m` key will resize all objects.

Circles can be resized as well. Capture the center of the circle with the above described mouse drag operation, the radius can be changed. For arcs you can capture the center (to modify the radius) or the endpoints to change the start/end angle or the arc angle.

### STRETCH OPERATIONS

An important operation that deserves a special paragraph is the `Stretch` operation. There is frequently the need to move part of the circuit without breaking connections, for example to create more room for other circuitry or just to make it look better. The first thing to do is to drag a selection rectangle with the mouse holding down the `Ctrl` key, cutting wires we need to stretch:

After selection is done hit the move (`'m'`) key. You will be able to move the selected part of the schematic keeping connected the wires crossing the selection rectangle:

In our example we needed to move up part of the circuit, the end result is shown in next picture. Multiple stretch rectangles can be set using the `Shift` key in addition to the `Ctrl` key after setting the first stretch area.

### PLACE WIRES SNAPPING TO CLOSEST PIN OT NET ENDPOINT

The (uppercase) `'W'` bindkey allows to place a wire putting start (and end point, later) to the closest pin or wire endpoint, this will make it easier to connect precisely without the need to zoom in all times.

### CONSTRAINED MOVE

while creating wires, lines, and moving, stretching, copying objects, pressing the `'h'` or `'v'` keys will constrain the movement to a horizontal or vertical direction, respectively.

Constrained horizontal move: regardless of the mouse pointer Y position movement occurs on the X direction only.

Unconstrained move: objects follow the mouse pointer in X and Y direction.