| 摘要 |
A method and system provides reversibility of an operation performed by a user of an application program and associated with a modification to an object model of the application program, such as a spreadsheet program or other office productivity application program. The top item of a first undo stack associated with the application program is determined, saved, and copied to a second stack functioning as a replicated undo stack. According to one aspect of the invention, such steps are performed prior to calling an object model method that clears the first undo stack. The top item of the second replicated undo stack is placed back onto the first undo stack.
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