/** * Calls the 'header' function inside the "Function menu module" if present. * A header function might be needed to add JavaScript or other stuff in the head. This can't be done in the main function because the head is already written. * example call in the header function: * $this->pObj->doc->JScode = $this->pObj->doc->wrapScriptTags(' ... * * @return void */ public function extObjHeader() { if (is_callable(array($this->extObj, 'head'))) { $this->extObj->head(); } }