The quiz define was:
def cob-plan-1-bal NUM*10 = PAT-INS-BAL-1 OF AR-ACCT-SUMMARY
Through a dozens experiments of EVERY combination of numeric definitions in
the book, I found the define looks like:
DEFINE COB-BAL-1 , 11 , 8 , IEEE
This, of course, was the LAST one on the list, but ain't it always the way.
Maybe I should work the list backwards next time.
Thanks for everyone's input.