Docs » Autodocs » texteditor.gadget » GA_TEXTEDITOR_UndoAvailable
GA_TEXTEDITOR_UndoAvailable -- [..G], BOOL
This tag is set to TRUE when the user is able to undo his action(s)
You can create a notify on this tag and let your undo button be
ghosted when there is nothing to undo.
GA_TEXTEDITOR_RedoAvailable()
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