[whatwg] Question on (new) header and hgroup

[Bruce Lawson]

I'm struggling to understand the reasons for <hgroup>: wouldn't one or
more h1..h6 elements wrapped in the same <header> imply just such a
grouping without the need for such an element?

To illustrate my query, what is the difference between

<header>
<h1>HTML 5</h1>
<h2>a new era of loveliness</h2>
<nav> ... </nav>
</header>

and

<header>
<hgroup>
<h1>HTML 5</h1>
<h2>a new era of loveliness</h2>
</hgroup>
<nav> ... </nav>
</header>

?

-- 
Bruce Lawson
Web Evangelist
www.opera.com (work)
www.brucelawson.co.uk (personal)