On Tue, Aug 9, 2011 at 9:19 PM, Daniel Friesen
<lists(a)nadir-seen-fire.com> wrote:
<h#> tags are not invalid inside of table
contents. <tr>'s contents are
flow content, and <h#> tags are flow content.
You mean <td>, not <tr>.
<h#> tags are however invalid inside of
<th> tags which are phrasing
content.
There's a bug open asking to change this, and allow flow content inside <th>:
http://www.w3.org/Bugs/Public/show_bug.cgi?id=13174