$subject: Subject of the email
$body: Body of the message
+'AncientPagesQuery': Allow extensions to modify the query used by
+Special:AncientPages.
+&$tables: tables to join in the query
+&$conds: conditions for the query
+&$joinConds: join conditions for the query
+
'APIAfterExecute': After calling the execute() method of an API module. Use
this to extend core API modules.
&$module: Module object