ISSUE-19: Arrangement and formatting of use cases

ISSUE-19: Arrangement and formatting of use cases

http://www.w3.org/2006/WSC/Group/track/issues/19

Raised by: Mary Ellen Zurko
On product: Note: use cases etc.

http://lists.w3.org/Archives/Public/public-usable-
authentication/2007Mar/0032.html: 
I'd move use-case 20 before 16 (the start of a couple that have a 
different format.)  Also, a summary table of the characteristics might be 
useful, as in:
        20 | Known, prior visit | No interaction | None
It might help show any patterns in the use-cases and also show if there 
are gaps.

I like the table idea; is it doable? 

Is there any reason for 20 not to move up? Why is it at the end?