public function render()
    {
        $stream = $this->_rtf->getWriter();

        $stream->write(' ');
        if ($this->_font) {
            $stream->write('{' . $this->_font->getContent());
        }

        $defaultValue = PHPRtfLite_Utf8::getUnicodeEntities($this->_defaultValue, $this->_rtf->getCharset());
        $content = '{\field'
            . '{\*\fldinst ' . $this->getType()
            . '  {\*\formfield' . $this->getRtfCode() . '}'
            . '}{\fldrslt ' . $defaultValue . '}}';

        $stream->write($content);

        if ($this->_font) {
            $stream->write($this->_font->getClosingContent() . '}');
        }
        $stream->write(' ');
    }