ents.html">HTML elements</a> section of this
      reference indicates that its end tag can be <a href="syntax.html#omitted" id="omitted_xref4">omitted</a>.</li>
      <li>The <a href="syntax.html#contents" id="contents_xref5">contents</a> of an element
      <a href="terminology.html#must-requirement" id="must-requirement_xref26">must</a>
      be
      placed between just after its start tag (which
      <a href="syntax.html#omitted" title="syntax-tag-omission" id="omitted_xref5">might be
        implied,