public static function start()
    {
        if (self::$_page) {
            return null;
        }
        self::$_page = new Html\Document();
        self::$_zones['head'] = self::$_page->head();
        self::$_zones['body'] = self::$_page->body();
        ob_start();
        return self::$_page;
    }
public static function start()
    {
        if (self::$_page) {
            return null;
        }
        self::$_page = new Html\Document();
        self::$_zones['head'] = self::$_page->head();
        self::$_zones['body'] = self::$_page->body();
        ob_start();
        return self::$_page;
    }
public static function start ( ) { if ( self :: $ _page ) { return null ; } self :: $ _page = new Html \ Document ( ) ; self :: $ _zones [ 'head' ] = self :: $ _page -> head ( ) ; self :: $ _zones [ 'body' ] = self :: $ _page -> body ( ) ; ob_start ( ) ; return self :: $ _page ; }
Initialize page.

@return \Asbestos\Html\Document
Initialize page .