WD2000: How to Clear the Undo Stack (211317)

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You cannot turn off the Undo or Redo commands, nor can you change the maximum number of actions Word stores in the Undo or Redo stacks (limited by resources and document size)(maximum document size of 32 megabytes without graphics).

NOTE: If you are experiencing out-of-memory or slow-performance problems, be sure to rule out other Word or system operations as the cause.

To clear the Undo and Redo stacks in Word, use any of the following methods.

Method 1: Protect the Document for Forms

1. On the Tools menu, click Protect Document.
2. Under Protect document for, click Forms.
3. Click OK.

NOTE: If you do not actually want to protect your document as a form, click Unprotect Document on the Tools menu.

Method 2: Create and Use a Macro

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For more information about how to use the sample code in this article, click the article number below to view the article in the Microsoft Knowledge Base: The following sample Visual Basic for Applications macro clears the Undo stack for the active document.

   Sub ClearActiveDocumentUndoStack()
      ActiveDocument.UndoClear
   End Sub
				

The following sample Visual Basic for Applications macro clears the undo stack for all open documents.

   Sub ClearAllDocumentsUndoStack()
      Dim oDocUndoStack as Object
      For Each oDocUndoStack In Application.Documents
         oDocUndoStack.UndoClear
      Next oDocUndoStack
   End Sub