function &executeCommand()
 {
     global $tpl, $ilCtrl, $lng;
     $next_class = $this->ctrl->getNextClass($this);
     $cmd = $this->ctrl->getCmd();
     // content style
     $this->tpl->setCurrentBlock("ContentStyle");
     $this->tpl->setVariable("LOCATION_CONTENT_STYLESHEET", ilObjStyleSheet::getContentStylePath($this->glossary->getStyleSheetId()));
     $this->tpl->parseCurrentBlock();
     // syntax style
     $this->tpl->setCurrentBlock("SyntaxStyle");
     $this->tpl->setVariable("LOCATION_SYNTAX_STYLESHEET", ilObjStyleSheet::getSyntaxStylePath());
     $this->tpl->parseCurrentBlock();
     require_once "./Modules/Glossary/classes/class.ilGlossaryLocatorGUI.php";
     $gloss_loc =& new ilGlossaryLocatorGUI();
     $gloss_loc->setTerm($this->term);
     $gloss_loc->setGlossary($this->glossary);
     $gloss_loc->setDefinition($this->definition);
     $this->tpl->getStandardTemplate();
     $this->tpl->setTitle($this->term->getTerm() . " - " . $this->lng->txt("cont_definition") . " " . $this->definition->getNr());
     if ($this->ctrl->getNextClass() == "ilglossarydefpagegui") {
         $this->tpl->setTitleIcon(ilUtil::getImagePath("icon_glo.svg"));
     }
     switch ($next_class) {
         case "ilglossarydefpagegui":
             // output number of usages
             if ($ilCtrl->getCmd() == "edit" && $ilCtrl->getCmdClass() == "ilglossarydefpagegui") {
                 $nr = ilGlossaryTerm::getNumberOfUsages($_GET["term_id"]);
                 if ($nr > 0) {
                     $link = "[<a href='" . $ilCtrl->getLinkTargetByClass("ilglossarytermgui", "listUsages") . "'>" . $lng->txt("glo_list_usages") . "</a>]";
                     ilUtil::sendInfo(sprintf($lng->txt("glo_term_is_used_n_times"), $nr) . " " . $link);
                 }
             }
             // not so nice, to do: revise locator handling
             if ($this->ctrl->getNextClass() == "ilglossarydefpagegui" || $this->ctrl->getCmdClass() == "ileditclipboardgui") {
                 $gloss_loc->display();
             }
             $this->setTabs();
             $this->ctrl->setReturnByClass("ilGlossaryDefPageGUI", "edit");
             $this->ctrl->setReturn($this, "listDefinitions");
             $page_gui = new ilGlossaryDefPageGUI($this->definition->getId());
             $page = $page_gui->getPageObject();
             $this->definition->assignPageObject($page);
             $page->addUpdateListener($this, "saveShortText");
             $page_gui->setEditPreview(true);
             // metadata
             // ... set title to term, if no title is given
             include_once "./Services/MetaData/classes/class.ilMD.php";
             $md = new ilMD($this->glossary->getId(), $this->definition->getId(), "gdf");
             $md_gen = $md->getGeneral();
             if ($md_gen->getTitle() == "") {
                 $md_gen->setTitle($this->term->getTerm());
                 $md_gen->update();
             }
             $page_gui->activateMetaDataEditor($this->glossary->getId(), $this->definition->getId(), "gdf");
             //	$this->obj, "MDUpdateListener");
             $page_gui->setSourcecodeDownloadScript("ilias.php?baseClass=ilGlossaryPresentationGUI&amp;ref_id=" . $_GET["ref_id"]);
             $page_gui->setFullscreenLink("ilias.php?baseClass=ilGlossaryPresentationGUI&amp;cmd=fullscreen&amp;ref_id=" . $_GET["ref_id"]);
             $page_gui->setTemplateTargetVar("ADM_CONTENT");
             $page_gui->setOutputMode("edit");
             $page_gui->setStyleId($this->glossary->getStyleSheetId());
             $page_gui->setLocator($gloss_loc);
             $page_gui->setIntLinkReturn($this->ctrl->getLinkTargetByClass("ilobjglossarygui", "quickList", "", false, false));
             $page_gui->setPageBackTitle($this->lng->txt("cont_definition"));
             $page_gui->setLinkParams("ref_id=" . $_GET["ref_id"]);
             $page_gui->setHeader($this->term->getTerm());
             $page_gui->setFileDownloadLink("ilias.php?baseClass=ilGlossaryPresentationGUI&amp;cmd=downloadFile&amp;ref_id=" . $_GET["ref_id"]);
             $page_gui->setPresentationTitle($this->term->getTerm());
             $ret =& $this->ctrl->forwardCommand($page_gui);
             $tpl->setContent($ret);
             break;
         default:
             $this->setTabs();
             $gloss_loc->display();
             $ret =& $this->{$cmd}();
             break;
     }
 }