Command Reference \ Edit Commands
getReadOnly	Retrieves the editing enabled/disabled status of an edit gadget.
getSelLen	Retrieves the length of the selected text.
getSelStart	Retrieves the index of the first character in the selected text.
setMaxTextLength	Sets a limit on the amount of text that can be entered into an edit gadget.
setReadOnly	Enables or disables editing in an edit gadget.
setSelLen	Sets the length of the selected text.
setSelStart	Sets the start of the selected text.
setSelText	Replaces the selected text.