User blog comment:Plexioth- xD/Admins Board/@comment-1685631-20121211222759/@comment-1685631-20121212010327

All you have to do is go into the history of a page and hit rollback. It'll revert all edits to the last one made by a different user.

So if I edited a page a few times, after Ukantor edited it a few times, if you rollbacked my last edits it would revert to Uka's edits, back to before I even started editing.