public function addEmptyParagraph(PHPRtfLite_Font $font = null, PHPRtfLite_ParFormat $parFormat = null)
    {
        if ($parFormat === null) {
            $parFormat = new PHPRtfLite_ParFormat();
        }
        $element = new PHPRtfLite_Element($this->_rtf, '\\par', $font, $parFormat);
        $element->setIsRtfCode();
        $this->_elements[] = $element;

        return  $element;
    }