<li class="dropdown-submenu">
    <a href="#" tabindex="-1" data-separator=" - ">Separator</a>
    <ul class="dropdown-menu">
        <li><a href="#" data-separator=" - ">Space-Dash-Space</a></li>
        <li><a href="#" data-separator="-">Dash</a></li>
        <li><a href="#" data-separator=" ">Space</a></li>
        <li><a href="#" data-separator=".">Period</a></li>
        <li><a href="#" data-separator="_">Underscore</a></li>
    </ul>
</li>
