OO.ui.StackLayout.prototype.updateHiddenState = function (items, selectedItem) {
      var i,
      len;
      if (!this.continuous) {
        for (i = 0, len = items.length; i < len; i++) {
          if (!selectedItem || selectedItem !== items[i]) {
            items[i].toggle(false);
            items[i].$element.attr('aria-hidden', 'true');
          }
        }
        if (selectedItem) {
          selectedItem.toggle(true);
          selectedItem.$element.removeAttr('aria-hidden');
        }
      }
    };


{{{!}} class = "wikitable" width = " 30%"
! Header 1
! Header 2
! Header 3
{{!}}-
{{!}} Some text
{{!}} align = "center {{!}} Some more text
{{!}} align = "right {{!}} And even more
{{!}}}

Would result in:

Header 1 Header 2 Header 3
Some text Some more text And even more