/**
  * HTML for a page, with ids stripped, so it can be used as a javascript template.
  *
  * @param structure $structure object containing the structure of the quiz.
  * @param \stdClass $quiz the quiz settings.
  * @return string HTML for a new icon
  */
 protected function add_page_icon_template(structure $structure, $quiz)
 {
     if (!$structure->has_questions()) {
         return '';
     }
     $question = $structure->get_question_in_slot(1);
     $html = $this->page_split_join_button($quiz, $question, true);
     return str_replace('&slot=1&', '&slot=%%SLOT%%&', $html);
 }