The Clipboard: 3.7 Using The Clipboard: Implementing Undo

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For the most part, implementation of Undo is left up to the application. This is due to the fact that operations that may be undone are typically very application-specific. The text objects and the Ink object are the only exceptions to this; they provide their own Undo functions in response to MSG_META_UNDO . For more information on Undo and how it works in GEOS, see the MetaClass chapter.


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