<code>li</code>
          </td>
          <td>
            <ul>
              <li>
                Identifies the element as a <code>menuitemradio</code> element.
              </li>
              <li>
                When all items in a submenu are members of the same radio group,
                the group is defined by the <code>menu</code> element; a <code>group</code> element is not necessary.
              </li>
              <li>
                Accessible name is computed from the text content.
     