public function docbookdocAction()
    {
        $title              = _T('User manual');
        $md_parser          = $this->wdb->getMarkdownParser();

        // user manual
        $path               = Kernel::getPath('webdocbook_assets') . Kernel::getConfig('pages:user_manual', '');
        $update             = Helper::getDateTimeFromTimestamp(filemtime($path));
        $file_content       = file_get_contents($path);
        $md_content         = $md_parser->transformString($file_content);
        $output_bag         = $md_parser->get('OutputFormatBag');
        $user_manual_menu   = $output_bag->getHelper()
                                ->getToc($md_content, $output_bag->getFormater());
        $user_manual_content= $md_content->getBody();

        // MD manual
        $path_md            = Kernel::getPath('webdocbook_assets') . Kernel::getConfig('pages:md_manual', '');
        $update_md          = Helper::getDateTimeFromTimestamp(filemtime($path_md));
        $file_content       = file_get_contents($path_md);
        $md_content         = $md_parser->transformString($file_content);
        $output_bag         = $md_parser->get('OutputFormatBag');
        $md_manual_menu     = $output_bag->getHelper()
                                ->getToc($md_content, $output_bag->getFormater());
        $md_manual_content  = $md_content->getBody();

        // about content
        $about_content            = $this->wdb->display(
            '', 'credits', array('page_tools'=>'false')
        );

        // global page
        $page_infos     = array(
            'name'          => $title,
            'path'          => 'docbookdoc',
            'update'        => $update_md > $update ? $update_md : $update
        );
        $tpl_params     = array(
            'breadcrumbs'   => array($title),
            'title'         => $title,
            'page'          => array(),
            'page_tools'    => 'false'
        );
        $content            = $this->wdb->display(
            '',
            'user_manual',
            array(
                'user_manual_content'   => $user_manual_content,
                'md_manual_content'     => $md_manual_content,
                'user_manual_menu'      => $user_manual_menu,
                'md_manual_menu'        => $md_manual_menu,
                'about_content'         => $about_content,
                'page'                  => $page_infos,
                'page_tools'            => 'false',
                'page_title'            => 'true',
                'title'                 => $title,
            )
        );

        return array('default', $content, $tpl_params);
    }