Re: Officially suggested keyboard interaction for sub-menu items in the "navigation"?

Do we have a conclusion? Taking a look on the previous code again, and
there is a dilemma: when the focus is on the "About" menu item, should
hitting Enter key toggle the sub-menu or take users to about.html? There is
no specification addresses this issue. So it seems to be wrong to put a
"menubar" in the "navigation"?

<nav role="navigation">
    <ul role="menubar">
        <li role="presentation"><a href="index.html"
role="menuitem">Home</a></li>
        <li role="presentation">
            <a href="about.html" role="menuitem"
aria-haspopup="true">About</a>
            <ul role="menu">
                <li role="presentation"><a href="our-company.html"
role="menuitem">Our company</a></li>
                <li role="presentation"><a href="our-team.html"
role="menuitem">Our team</a></li>
                <li role="presentation"><a href="our-location.html"
role="menuitem">Our location</a></li>
            </ul>
        </li>
        <li role="presentation"><a href="contact.html"
role="menuitem">Contact</a></li>
    </ul>
</nav>


Sincerely,
Ian Yang