Manual talk:$wgExtensionFunctions

When are these functions called?
I am trying to determine at what point the extension set up functions in the  array are actually called. Could somebody please clarify? Thanks. --Wikitonic 18:44, 20 June 2008 (UTC) | Update: Nevermind, I thought "setup.php" referred to the setup file for the extension, not the one for MediaWiki itself in . --Wikitonic 18:47, 20 June 2008 (UTC)