setHeaders()
Sets headers - this should be called from the execute() method of all derived classes!
getOutput()
Get the OutputPage being used for this instance.
getUser()
Shortcut to get the User executing this instance.
checkPermissions()
Checks if userCanExecute, and if not throws a PermissionsError.
checkReadOnly()
If the wiki is currently in readonly mode, throws a ReadOnlyError.
Shortcut to construct a special page which is unlisted by default.