[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] | Reference for unit 'Classes' (#rtl)

# Reference for unit 'Classes': Constants

`BITSHIFT` |  | Used to calculate the size of a bits array
`dupAccept` |  | Duplicate values can be added to the list.
`dupError` |  | If an attempt is made to add a duplicate value to the list, an EStringListError exception is raised.
`dupIgnore` |  | Duplicate values will not be added to the list, but no error will be triggered.
`FilerSignature` |  | Constant that is found at the start of a binary stream containing a streamed component.
`fmCreate` |  | TFileStream.Create creates a new file if needed.
`fmOpenRead` |  | TFileStream.Create opens a file with read-only access.
`fmOpenReadWrite` |  | TFileStream.Create opens a file with read-write access.
`fmOpenWrite` |  | TFileStream.Create opens a file with write-only access.
`MASK` |  | Bitmask with all bits on.
`MaxBitFlags` |  | Maximum number of bits in TBits collection.
`MaxBitRec` |  | Maximum number of bit records in TBits.
`MaxListSize` |  | Maximum number of elements in list.
`scAlt` |  | Indicates ALT key in a keyboard shortcut.
`scCtrl` |  | indicates CTRL key in a keyboard shortcut.
`scNone` |  | Indicates no special key is pressed in a keyboard shortcut.
`scShift` |  | Indicates Shift key in a keyboard shortcut.
`SGUIDObserved` |  | Observed interface GUID as a string
`SGUIDObserver` |  | Observer interface GUID as a string
`soFromBeginning` |  | Seek starts relative to the stream origin.
`soFromCurrent` |  | Seek starts relative to the current position in the stream.
`soFromEnd` |  | Seek starts relative to the stream end.
`toEOF` |  | Value returned by TParser.Token when the end of the input stream was reached.
`toFloat` |  | Value returned by TParser.Token when a floating point value was found in the input stream.
`toInteger` |  | Value returned by TParser.Token when an integer was found in the input stream.
`toString` |  | Value returned by TParser.Token when a string was found in the input stream.
`toSymbol` |  | Value returned by TParser.Token when a symbol was found in the input stream.
`toWString` |  | Value returned by TParser.Token when a widestring was found in the input stream.