Oversight, also called hiding revisions, is an extension of the MediaWiki software.
Commons:Oversighters explains the role of oversighters on Wikimedia Commons.
Hiding some personal information that should not be public.
The oversight log, as taken by m:User:Rob Church.
The oversight log, available at special:oversight but available only to those with the oversight permission.
The Revision Hiding and Log Hiding extension interface, currently available to those with the oversight permission.
Standard permissions: Administrator • Bureaucrat • CheckuserImport • Oversight • DevelopersExtensions: Boardvote extension • PovWatch extension