These new elements weren't clear to me initially either. Maybe instead of:
<h1>HTML 5</h1> <h2>a new era of loveliness</h2> We should introduce <subtitle> or <tagline> elements? <h1>HTML 5</h1> <tagline>a new era of loveliness</tagline> or perhaps stepping a little on XHTML2's toes isn't that bad and <hgroup> can be renamed to <h>: <h> <h1>HTML 5</h1> <h2>a new era of loveliness</h2> </h> -- regards, Kornel Lesinski
