<choice> without univ-atts

[Christopher Wong <cwong@idiominc.com>]

Why does the <choice> element, seemingly alone among others, not have 
the usual collection of attributes most elements have (id, conref, 
conditional processing)? It's a specialization of topic/li, which does 
have these attributes. A similar element, <groupchoice> does have some 
variation of %univ-atts;.

Chris