This, in my humble opinion should be very legal
EXTRN BIT (ReversalFlag) ... ... 002E 1199 jnb ReversalFlag,Gen1 *** __________________________________________^ *** ERROR #45 IN 1199 (AVFMTBM.A51, LINE 529): UNDEFINED SYMBOL (PASS-2) 0031 F4 1200 cpl a 0032 1201 Gen1:
Was a $set in wrong place, sorry Erik