/**
 * authorize module User
 * 
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@exit0.net>
 * @copyright 2004 by http://wombat.exit0.net
 * @package wombatSite
 * @subpackage user
 */
 
Authorize agains user name

This module allows to check whether a special user is logged in or not. 
If the rule is empty, this module will simply require any authenticated
user to gain access. 

If a rule is specified, it defines a single user name. So access will be 
only granted if the user-name of the current user equals the rule. Using 
a "!" in front of the user name negates the request - in other words, it  
denies access for a specified user. 

Parameter/rule: [!]<username>