This should go to comp.lang.ada, but it seems my news connection is down. Long time ago, I read about a program, I think it was in Ada, that NASA was using to schedule experiments on the space shuttle. It had some GUI capabilities. Users would identify what pieces of equipment they needed for an experiment, and the tool would reserve a time slot when all the pieces were available. I am trying to locate info on that or a similar tool, preferably with source, and preferably in Ada and/or TCL/wish. It has been so long that I can't remember exact words for a more effective Web search. Maybe it wasn't even NASA.