TEST.PRG is the calling program, SUBSET.PRG is the proc file.
It would be just as easy to include a third parm in the call to SUBSET
which would evaluate as a logical variable for more consistency.  For some
reason, the current version of SUBSET won't accurately flag identical strings.
I can only claim fatigue (it was about 11 PM, guys!) as the cause of this 
anomaly.  <snicker - if A-T can call bugs by euphamism, so can I!>