O_WRONLY          658 src/dps8/hdbg.c   int fd = open ("M.dump", O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR);
O_WRONLY          343 src/dps8/segldr.c     int fd = open (p2, O_WRONLY | O_CREAT, 0664);
O_WRONLY           76 src/dps8/tracker.c         fd = open ("track.dat", O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);