'CategoryPageView': Before viewing a categorypage in CategoryPage::view.
$catpage: CategoryPage instance
+'CategoryViewer::doCategoryQuery': After querying for pages to be displayed
+in a Category page. Gives extensions the opportunity to batch load any
+related data about the pages.
+$type: The category type. Either 'page', 'file' or 'subcat'
+$res: Query result from DatabaseBase::select()
+
+'CategoryViewer::generateLink': Before generating an output link allow
+extensions opportunity to generate a more specific or relevant link.
+$type: The category type. Either 'page', 'img' or 'subcat'
+$title: Title object for the categorized page
+$html: Requested html content of anchor
+&$link: Returned value. When set to a non-null value by a hook subscriber
+this value will be used as the anchor instead of Linker::link
+
'ChangePasswordForm': For extensions that need to add a field to the
ChangePassword form via the Preferences form.
&$extraFields: An array of arrays that hold fields like would be passed to the
&$join_conds: join conditions for the tables
$opts: FormOptions for this request
+'ChangeTagAfterDelete': Called after a change tag has been deleted (that is,
+removed from all revisions and log entries to which it was applied). This gives
+extensions a chance to take it off their books.
+$tag: name of the tag
+&$status: Status object. Add warnings to this as required. There is no point
+ setting errors, as the deletion has already been partly carried out by this
+ point.
+
+'ChangeTagCanCreate': Tell whether a change tag should be able to be created
+from the UI (Special:Tags) or via the API. You could use this hook if you want
+to reserve a specific "namespace" of tags, or something similar.
+$tag: name of the tag
+$user: user initiating the action
+&$status: Status object. Add your errors using `$status->fatal()` or warnings
+ using `$status->warning()`. Errors and warnings will be relayed to the user.
+ If you set an error, the user will be unable to create the tag.
+
+'ChangeTagCanDelete': Tell whether a change tag should be able to be
+deleted from the UI (Special:Tags) or via the API. The default is that tags
+defined using the ListDefinedTags hook are not allowed to be deleted unless
+specifically allowed. If you wish to allow deletion of the tag, set
+`$status = Status::newGood()` to allow deletion, and then `return false` from
+the hook function. Ensure you consume the 'ChangeTagAfterDelete' hook to carry
+out custom deletion actions.
+$tag: name of the tag
+$user: user initiating the action
+&$status: Status object. See above.
+
+'ChangeTagsListActive': Allows you to nominate which of the tags your extension
+uses are in active use.
+&$tags: list of all active tags. Append to this array.
+
'LoginUserMigrated': Called during login to allow extensions the opportunity to
inform a user that their username doesn't exist for a specific reason, instead
of letting the login form give the generic error message that the account does
$old: the ?old= param value from the url
$new: the ?new= param value from the url
+'GetDifferenceEngine': Called when getting a new difference engine interface object
+Return false for valid object in $differenceEngine or true for the default difference engine
+$context: IContextSource context to be used for diff
+$old: Revision ID to show and diff with
+$new: Either a revision ID or one of the strings 'cur', 'prev' or 'next'
+$refreshCache: If set, refreshes the diff cache
+$unhide: If set, allow viewing deleted revs
+&$differenceEngine: output parameter, difference engine object to be used for diff
+
'DiffRevisionTools': Override or extend the revision tools available from the
diff view, i.e. undo, etc.
$newRev: Revision object of the "new" revision
$oldid: oldid (int) being viewed
'DoEditSectionLink': Override the HTML generated for section edit links
+* Deprecated in favour of SkinEditSectionLinks hook *
$skin: Skin object rendering the UI
$title: Title object for the title being linked to (may not be the same as
the page title, if the section is included from a template)
or request state must be added through MakeGlobalVariablesScript instead.
&$vars: array( variable name => value )
+'ResourceLoaderGetLessVars': Called in ResourceLoader::getLessVars after variables
+from $wgResourceLoaderLESSVars are added. Can be used to add context-based variables.
+&$lessVars: array of variables already added
+
'ResourceLoaderRegisterModules': Right before modules information is required,
such as when responding to a resource
loader request or generating HTML output.
&$forContent: overridable flag if copyright footer is shown in content language.
This parameter is deprecated.
+'SkinEditSectionLinks': Modify the section edit links
+$skin: Skin object rendering the UI
+$title: Title object for the title being linked to (may not be the same as
+ the page title, if the section is included from a template)
+$section: The designation of the section being pointed to, to be included in
+ the link, like "§ion=$section"
+$tooltip: The default tooltip. Escape before using.
+ By default, this is wrapped in the 'editsectionhint' message.
+&$result: Array containing all link detail arrays. Each link detail array should contain
+ the following keys:
+ * targetTitle - Target Title object
+ * text - String for the text
+ * attribs - Array of attributes
+ * query - Array of query parameters to add to the URL
+ * options - Array of options for Linker::link
+$lang: The language code to use for the link in the wfMessage function
+
'SkinGetPoweredBy': TODO
&$text: additional 'powered by' icons in HTML. Note: Modern skin does not use
the MediaWiki icon but plain text instead.