<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>I've noticed a couple of instances in which the spec gives the content model for a given element, like for example, the hgroup element contains one or more of h1, h2, etc., and then specifies what should happen even if the element doesn't contain what it's supposed to, as here where we learn what an hgroup's rank should be if it is empty:</div><div><br></div><div><blockquote type="cite">The <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/sections.html#rank">rank</a> of an <code><a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/sections.html#the-hgroup-element">hgroup</a></code> element is the
rank of the highest-ranked <code><a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/sections.html#the-h1,-h2,-h3,-h4,-h5,-and-h6-elements">h1</a></code>–<code><a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/sections.html#the-h1,-h2,-h3,-h4,-h5,-and-h6-elements">h6</a></code>
element descendant of the <code><a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/sections.html#the-hgroup-element">hgroup</a></code> element, if there are
any such elements, or otherwise the same as for an <code><a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/sections.html#the-h1,-h2,-h3,-h4,-h5,-and-h6-elements">h1</a></code>
element (the highest rank).</blockquote><div><br></div><div apple-content-edited="true"><span class="Apple-style-span" style="font-size: 12px; "><div>It seems like it's implying that it's OK for the hgroup to not follow its own content model.</div><div><br></div><div>Or is it just saying what should happen if it is erroneously empty?</div><div><br></div><div>thanks,</div><div>Liz<span class="Apple-style-span" style="font-size: medium;"><br></span></div></span></div></div></body></html>