MTSE_BOT         2035 src/dps8/dps8_mt.c         if (ret != MTSE_OK && ret != MTSE_TMK && ret != MTSE_BOT) {
MTSE_BOT         2405 src/dps8/dps8_mt.c     else if (code == MTSE_BOT)
MTSE_BOT          631 src/simh/sim_tape.c     return MTSE_BOT;                                    /*   then reading backward is not possible */
MTSE_BOT          653 src/simh/sim_tape.c                     r = MTSE_BOT;                       /*   then quit with an error */