in this example menubar where focus moves in response to hover in order to help maintain context for users who use both keyboard and mouse:
        <ol>
          <li>After a parent menu item in the menubar has been activated and the user hovers over a different parent item in the menubar, focus will follow hover.</li>
          <li>When a submenu is open and the user hovers over an item in the submenu, focus follows hover.</li>
        </ol>
      </li>
    </ol>
  </section>

  <section>
    <h2 id="kbd_l