Document.UndoClear (Word)

Clears the list of actions that can be undone for the specified document.

This method corresponds to the list of items that appears when you click the arrow beside the Undo button on the Standard toolbar. Include this method at the end of a macro to keep Visual Basic actions from appearing in the Undo box (for example, "VBA-Selection.InsertAfter").

ActiveDocument.UndoClear