function render() {
		$args=func_get_args();
		$format=$args?array_shift($args):'png';
		if (PHP_SAPI!='cli') {
			header('Content-Type: image/'.$format);
			header('X-Powered-By: '.Base::instance()->PACKAGE);
		}
		call_user_func_array(
			'image'.$format,
			array_merge([$this->data,NULL],$args)
		);
	}