function registerModule2($className, $shortName = null)
    {
        if (isset($this->modules->$className)) return false;

        $this->modules->$className = &new $className($this);

        // universal shortcuts
        if ($shortName === null) {
            $shortName = (substr($className, 0, 4) === 'Texy') ? substr($className, 4) : $className;
            $shortName{0} = strtolower($shortName{0});
        }
        if (!isset($this->$shortName)) $this->$shortName = & $this->modules->$className;
        if (!isset($this->$shortName)) $this->$shortName = & $this->modules->$className;
    }