&$skin: Skin object to be used with the list
&$list: List object (defaults to NULL, change it to an object instance and
return false override the list derivative used)
+$groups Array of ChangesListFilterGroup objects (added in 1.34)
'FileDeleteComplete': When a file is deleted.
&$file: reference to the deleted file
'SpecialSearchResults': Called before search result display
$term: string of search term
-&$titleMatches: empty or SearchResultSet object
-&$textMatches: empty or SearchResultSet object
+&$titleMatches: empty or ISearchResultSet object
+&$textMatches: empty or ISearchResultSet object
'SpecialSearchResultsPrepend': Called immediately before returning HTML
on the search results page. Useful for including an external search