SIG_DFL          6589 src/simh/scp.c signal (SIGINT, SIG_DFL);                               /* cancel WRU */
SIG_DFL          6591 src/simh/scp.c signal (SIGHUP, SIG_DFL);                               /* cancel WRU */
SIG_DFL          6593 src/simh/scp.c signal (SIGTERM, SIG_DFL);                              /* cancel WRU */