'ExtractThumbParameters': Called when extracting thumbnail parameters from a
thumbnail file name.
+DEPRECATED: Media handler should override MediaHandler::parseParamString instead.
$thumbname: the base name of the thumbnail file
&$params: the currently extracted params (has source name, temp or archived zone)
$user: User whose preferences are being modified.
&$preferences: Preferences description array, to be fed to an HTMLForm object
+'GetRelativeTimestamp': Pre-emptively override the relative timestamp generated
+by MWTimestamp::getRelativeTimestamp(). Return false in this hook to use the custom
+output.
+&$output: string for the output timestamp
+&$diff: DateInterval representing the difference between the timestamps
+$timestamp: MWTimestamp object of the current (user-adjusted) timestamp
+$relativeTo: MWTimestamp object of the relative (user-adjusted) timestamp
+$user: User whose preferences are being used to make timestamp
+$lang: Language that will be used to render the timestamp
+
'getUserPermissionsErrors': Add a permissions error when permissions errors are
checked for. Use instead of userCan for most cases. Return false if the user
can't do it, and populate $result with the reason in the form of
&$result : Whether or not the action should be prevented
Change $result and return false to give a definitive answer, otherwise
the built-in rate limiting checks are used, if enabled.
+$incrBy: Amount to increment counter by
'PlaceNewSection': Override placement of new sections. Return false and put the
merged text into $text to override the default behavior.