on &action=edit.
$EditPage: the EditPage object
+'AlternateUserMailer': Called before mail is sent so that mail could
+be logged (or something else) instead of using PEAR or PHP's mail().
+Return false to skip the regular method of sending mail. Return a
+string to return a php-mail-error message containing the error.
+Returning true will continue with sending email in the regular way.
+$headers: Associative array of headers for the email
+$to: MailAddress object or array
+$from: From address
+$subject: Subject of the email
+$body: Body of the message
+
'APIAfterExecute': after calling the execute() method of an API module.
Use this to extend core API modules.
&$module: Module object
$title: The title in question.
&$types: The types of protection available.
+'TitleIsCssOrJsPage': Called when determining if a page is a CSS or JS page
+$title: Title object that is being checked
+$result: Boolean; whether MediaWiki currently thinks this is a CSS/JS page. Hooks may change this value to override the return value of Title::isCssOrJsPage()
+
'TitleMoveComplete': after moving an article (title)
$old: old title
$nt: new title