This demo illustrates the use of the AS3 Undo utility your PureMVC-based Flex application.
The demo has historically been located here:
http://trac.puremvc.org/Demo_AS3_Flex_HistoryPanelThe project has been moved:
https://github.com/PureMVC/puremvc-as3-demo-flex-historypanel/wikiThe author is Dragos Dascalita.