WordPress at a glance
function is not described

wpcache_logged_in_message() WPSCache 1.0

No Hooks.

Return

null. Nothing.

Usage

wpcache_logged_in_message();

Code of wpcache_logged_in_message() WPSCache 1.7.3

<?php
function wpcache_logged_in_message() {
	echo '<!-- WP Super Cache did not cache this page because you are logged in and "Don\'t cache pages for logged in users" is enabled. -->';
}