<HP> and HTML history

I've been looking at historical information of HTML. In my perusal, 
I've come across <HP> (highlighted phrase element) which was considered 
so obsoltete that it isn't even mentioned in any of the official 
standards, (Altho, I've found either a draft or annotated version of 
the HTML 2 standard on the web, that mentions this element.)

Unfortunately some things were left unclear by what I've read, and I 
figure this list is probably the best place to ask for answers.

1) Was HP ever used by itself or were only HP0 (roman), HP1 (italic),
   HP2 (bold), and HP3 (bold italic) ever used?
2) Was it a container like B or an empty tag similar to BASEFONT?
3) Was it ever implemented by Mosaic? (I think I can safely exclude
   IE and Navigator, as ever having implemented them.)
4) What was the origin of this element?

Thanks for any light you can shed on this subject.

Received on Tuesday, 13 May 2003 04:31:51 UTC