A summary of this page:
Rollback is a tool given to certain users to whom a Bureaucrat grants it. It is used to quickly undo vandalism but is made to undo vandalism only, thereby alerting an administrator or bureaucrat.
Rollback History

The Rollback button in the Page History

Rollback is a user right that can be given by all Bureaucrats. Rollback gives users a few features, such as a rollback button on the Special:Recentchanges page, and in a page's history. Rollback is also an Administrator and content moderator tool and does not have to be given to users in those groups as a user right in addition to their administrator and content moderator rights.

See also Edit