function render() {
		if ($this->show_metainfo) {
			$this->appendtagbody($this->hidden('form')
				->value_is($this->signature()));
		}

		return parent::render();
	}
function render() {
		if ($this->show_metainfo) {
			$this->appendtagbody($this->hidden('form')
				->value_is($this->signature()));
		}

		return parent::render();
	}
function render ( ) { if ( $ this -> show_metainfo ) { $ this -> appendtagbody ( $ this -> hidden ( 'form' ) -> value_is ( $ this -> signature ( ) ) ) ; } return parent :: render ( ) ; }
A "form" hidden field will be inserted into the form to identify the
data submitted belonged to this form.

@return string
A form hidden field will be inserted into the form to identify the data submitted belonged to this form .