SCPE_SUB         3599 src/simh/scp.c             return SCPE_SUB;
SCPE_SUB         6738 src/simh/scp.c             return SCPE_SUB;
SCPE_SUB         3832 src/simh/sim_tmxr.c         result = SCPE_SUB;                              /* "Subscript out of range" error */