This element represents a span of text with an unarticulated, though explicitly rendered, non-textual annotation (when you are annotating something, but not explicitly saying what it is).
<u>U element</u>
This element represents a list of items, where the order of the items is not important — that is, where changing the order would not materially change the meaning of the list.
<ul class="class-name" id="unordered-list-id-name">
<li>List item 1</li>
<li>List item 2 which is much longer and should go over two lines</li>
<li>List item 3</li>
</ul>