public function parse(&$errnum, &$errmsg)
	{
		if (!strlen($this->_xml))
		{
			$errnum = QuickBooks_XML::ERROR_CONTENT;
			$errmsg = 'No XML content to parse.';
			return false;
		}

		// first, let's remove all of the comments
		if ($this->validate($errnum, $errmsg))
		{
			return $this->_backend->parse($errnum, $errmsg);
		}

		return false;
	}