Adobe® Flex® 4 Language Reference
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flashx.undo 

The flashx.undo package contains the classes that manage the history of editing operations.



Interfaces
 InterfaceDescription
 IOperation IOperation defines the interface for operations that can be undone and redone.
 IUndoManager IUndoManager defines the interface for managing the undo and redo stacks.
Classes
 ClassDescription
 UndoManager The UndoManager class manages the history of editing operations on a text flow so that these operations can be undone and redone.