$iswatch: watch flag
$section: section #
+'ArticleUndeleted': When one or more revisions of an article are restored
+$title: Title corresponding to the article restored
+$create: Whether or not the restoration caused the page to be created
+(i.e. it didn't exist before)
+
'AuthPluginSetup': update or replace authentication plugin object ($wgAuth)
Gives a chance for an extension to set it programattically to a variable class.
&$auth: the $wgAuth object, probably a stub