/**
  *
  */
 function render()
 {
     //retrieve view mode
     $type = xEntryType::get($this->type);
     if ($type->view_mode_id === NULL) {
         //apply theme default
         $theme = xTheme::get_default();
         return eval($theme->get_view_mode_procedure('entry'));
     } else {
         //apply specified view mode
         $view_mode = xViewMode::get($type->view_mode_id);
         return eval($view_mode->display_procedure);
     }
 }