User blog:NeneAndNate/Rollback

Can someone please tell me what a rollback is because I'm a admin for 2 wikis and the other admins don't know what it is either. Thank you :) &#91;&#91;User:NeneG&#93;&#93; Admin/Founder of this House of Anubis Wikia and A.N.T. Farm Wikia 15:21, February 19, 2011 (UTC)