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WD2000: How to Clear the Undo Stack

Article ID: 211317 - View products that this article applies to.

This article was previously published under Q211317

SUMMARY

This article contains several methods for clearing the Undo stack in Microsoft Word.

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

On the Tools menu, click Protect Document.
Under Protect document for, click Forms.
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

Microsoft provides programming examples for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. Microsoft support professionals can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific needs.
If you have limited programming experience, you may want to contact a Microsoft Certified Partner or Microsoft Advisory Services. For more information, visit these Microsoft Web sites:

Microsoft Certified Partners - https://partner.microsoft.com/global/30000104

(https://partner.microsoft.com/global/30000104)

Microsoft Advisory Services - http://support.microsoft.com/gp/advisoryservice

(http://support.microsoft.com/gp/advisoryservice)

For more information about the support options that are available and about how to contact Microsoft, visit the following Microsoft Web site:http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

(http://support.microsoft.com/default.aspx?scid=fh;en-us;cntactms)

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:

212536

(http://support.microsoft.com/kb/212536/EN-US/ )

OFF2000: How to Run Sample Code from Knowledge Base Articles

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

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