User blog comment:Meta07/BCoW's username colors (also the place to keep track of "special" users)/@comment-5484555-20121013191748/@comment-5294711-20121013231853

There're actually 2 kinds of "undo":


 * The normal "undo" button lets you undo the last edit done in the article and just that.


 * The special "rollback" button lets you undo ALL of the edits of the last editor in one button, and it does it even quicker than "undo".


 * Being promoted to "Rollbacker" unlock the "rollback" button. Rollbackers are ranked higher than Chat Moderators because Admins can promote someone to Chat Moderator, but only Bureaucrats (higher-ranked than admin) can promote someone to Rollbacker, Admin or even Bureaucrat.