In reply to Jordan Lev.

Thanks Jordan. I'm absolutely sure I'm missing something. I appreciate the links. I read the sample of the book and I think I want to read the rest. It looks interesting.

I'll revisit this topic again, though first I'll put some effort into understanding the document outline. I looked at it a couple years ago. I understood the idea behind the outline, but I was definitely confused about it. I'll look into it again.

I do think the idea behind the new tags and the document outline is good. At the same time I wonder how useful any of them really are at the moment.