The only actions I know of that clear the Undo stack are closing the
document and protecting/unprotecting a form.

--
Suzanne S. Barnhill
Microsoft MVP (Word)
Words into Type
Fairhope, Alabama USA
Word MVP FAQ site: http://word.mvps.org
Email cannot be acknowledged; please post all follow-ups to the newsgroup so
all may benefit.

"Ross" wrote in message
...
I have always been able to use the undo option in word but it somehow got
turned off. What did I do to disable it and how can I turn it back on?