A few File menu items...
"Revert" as in "lose all changes and load the last saved version of this file?"
Or a real History list? History implies many layers of undo, whereas Revert usually meant one step back to where we started the current session.
Both? AR already keeps track of loads of levels of undo, so "how hard can it be" to jump around instead of progressing/regressing linearly?
*Hides from Andy.* =]
I forgot to clarify that both 'Revert' and the history list usually reside in the 'File' menu. I guess this should clear up what I meant...