[NTG-context] Math Cases

[Aditya Mahajan]

Is it possible to number each part of the cases environment. I want

\startformula
a = \cases{
   b, & \text{ if something} \cr
   c, & \text{ if something else} \cr}
\stopformula

to come out as
       { b   if something         (1)
  a =  {
       { c   if something else    (2)

Also, is it possible to have subnumbered equations, that is can I get 
(1a) and (1b) instead of (1) and (2).

Thanks,
Aditya

-- 
Aditya Mahajan, EECS Systems, University of Michigan
http://www.eecs.umich.edu/~adityam || Ph: 7342624008