SIG_DFL          6632 src/simh/scp.c signal (SIGINT, SIG_DFL);                               /* cancel WRU */
SIG_DFL          6634 src/simh/scp.c signal (SIGHUP, SIG_DFL);                               /* cancel WRU */
SIG_DFL          6636 src/simh/scp.c signal (SIGTERM, SIG_DFL);                              /* cancel WRU */