SCPE_SUB         3782 src/simh/scp.c             return SCPE_SUB;
SCPE_SUB         6977 src/simh/scp.c             return SCPE_SUB;
SCPE_SUB         3825 src/simh/sim_tmxr.c         result = SCPE_SUB;                              /* "Subscript out of range" error */