*/
public $top;
public $out;
- public $elementClass = 'PPDStackElement';
+ public $elementClass = PPDStackElement::class;
public static $false = false;
*/
public $lineStart;
- public $partClass = 'PPDPart';
+ public $partClass = PPDPart::class;
public function __construct( $data = [] ) {
$class = $this->partClass;