kotti/templates/view/nav-local.pt
<div tal:condition="parent" id="local-navigation">
<ul class="nav nav-pills nav-stacked">
<tal:repeat tal:define="nodes [parent] + children"
tal:repeat="item nodes">
<li tal:define="active item == context and 'active' or ''"
class="${active}">
<a href="${api.url(item)}"
title="${getattr(item, 'description', None)}">
${item.title}
</a>
</li>
</tal:repeat>
</ul>
</div>