SCPE_SUB         3376 src/simh/scp.c             return SCPE_SUB;
SCPE_SUB         6393 src/simh/scp.c             return SCPE_SUB;
SCPE_SUB         3829 src/simh/sim_tmxr.c         result = SCPE_SUB;                              /* "Subscript out of range" error */