Thread:Olaf-Tiffi-Odus2711/@comment-24880902-20141027080339/@comment-16894369-20141027111208

A rollback can undo edits by a user in one action. This can be useful if the wiki receives vandalism.

You can find the button in the pages history. Be careful, though, that it will immediately remove the revision without being able to review it. Also, if it is not a vandalism, the undo button is still preferred, since it allows you to write down a summary explaining the edit.