private function print_orphaned_content() {
        global $OUTPUT;

        $page = $this->page;

        if ($page->timerendered + WIKI_REFRESH_CACHE_TIME < time()) {
            $fresh = wiki_refresh_cachedcontent($page);
            $page = $fresh['page'];
        }

        $swid = $this->subwiki->id;

        $table = new html_table();
        $table->head = array(get_string('orphaned', 'wiki') . $OUTPUT->help_icon('orphaned', 'wiki'));
        $table->attributes['class'] = 'generalbox table';
        $table->data = array();
        $table->rowclasses = array();

        if ($orphanedpages = wiki_get_orphaned_pages($swid)) {
            foreach ($orphanedpages as $page) {
                $link = wiki_parser_link($page->title, array('swid' => $swid));
                $class = ($link['new']) ? 'class="wiki_newentry"' : '';
                $table->data[] = array('<a href="' . $link['url'] . '"' . $class . '>' . format_string($link['content']) . '</a>');
            }
        } else {
            $table->data[] = array(get_string('noorphanedpages', 'wiki'));
        }

        echo html_writer::table($table);
    }