protected function __getLabelMetaString()
    {
        $strOutput = "";

        if (is_array($this->__labelmeta)) {
            foreach ($this->__labelmeta as $key => $value) {
                if (! in_array($key, $this->__reservedmeta)) {
                    $strOutput .= " {$key}=\"{$value}\"";
                }
            }
        }

        return $strOutput;
    }