SIGINT           1035 src/dps8/threadz.c     sigaction (SIGINT, & act, NULL);
SIGINT           6036 src/simh/scp.c # ifdef SIGINT
SIGINT           6037 src/simh/scp.c if (signal (SIGINT, int_handler) == SIG_ERR) {          /* set WRU */
SIGINT           6117 src/simh/scp.c signal (SIGINT, SIG_DFL);                               /* cancel WRU */