public static function Section($Section, $Method = 'add') {
      $Section = array_fill_keys((array)$Section, TRUE);
      
      
      switch (strtolower($Method)) {
         case 'add':
            self::$_Section = array_merge(self::$_Section, $Section);
            break;
         case 'remove':
            self::$_Section = array_diff_key(self::$_Section, $Section);
            break;
         case 'set':
            self::$_Section = $Section;
            break;
         case 'get':
         default:
            return array_keys(self::$_Section);
      }
   }