I'm trying to modify the header in Mystique (specifically, I'm trying to add some images to link to the site's Twitter, Facebook, etc. pages). header.php mentions mystique_header like this:
<?php do_action('mystique_header'); ?>
But I've run a text search through all of the Mystique files (and through every file in the WordPress folder, just in case), and there is no other file with mystique_header in it. Where is this function defined?
(Sorry if my programming lingo is out-of-whack.)