Anyone canrevert a page to fix vandalism. All revisions of a page back to the first one are stored in thepage history. To revert to an earlier version, just select and copy the text from the history, open the article for editing, paste it back in, and save it. When not dealing with obviousvandalism, reverting often is a bad strategy. It alienates other users and provokesedit wars.Stay cool, talk to the user in question directly, or try to resolve issues on the article'sTalk page.
Please do not revert the same page more than three times within 24-hours (thethree-revert rule). Doing so can lead to a temporaryban against you.Administrators andRollbackers have a handyrollback feature that allows them to instant-revert vandalism by going to a user's contributions page. To revert only the most recent edit there is anundo link on the article history page or on the articlediff page.