HTML4 Diffs - Object, again

Anne,

can you track down and put into the Differences document some data 
about _when_ and _why_ HTML5 changed the content model of <object>? 

Example of the issue:

<p>
     <object type="image/gif" data="image">
        <p>Foo.</p>
     </object>
</p>

The above is legal in HTML4, but illegal in HTML5.I've already a bug to 
get back the HTML4 content model: 
http://www.w3.org/Bugs/Public/show_bug.cgi?id=9657

For tracking of this issue with the Differences document, see: 
http://www.w3.org/Bugs/Public/show_bug.cgi?id=10021
-- 
leif halvard silli