21     protected $internal = NULL;  variable in helper_plugin_odt_cssdocument
24         $this->internal = new cssdocument();
28         $this->internal->open ($element, $attributes, $pseudo_classes, $pseudo_elements);
32         $this->internal->close ($element);
36         return $this->internal->getCurrentElement ();
40         return $this->internal->getEntry ($index);
44         return $this->internal->getCurrentEntry ();
48         return $this->internal->getIndexLastOpened ();
52         return $this->internal->findParent ($start);
56         return $this->internal->getPrecedingSibling ($current);
60         return $this->internal->getDump ($current);