Changes by: Jason Hickey (jyh at cs.caltech.edu)
Date: 2006-01-14 08:20:34 -0800 (Sat, 14 Jan 2006)
Revision: 8475
Log message:

      I think we do not need the type BSequent for the bterms that represent
      sequents, so I'm going to try and weaken it to BTerm{0}.