1. CD.COM: YET ANOTHER SET DEFAULT COMMAND FILE. 2. WHOIS PROGRAMS: A SET OF PROGRAMS THAT ALLOW USERS TO FIND OUT THE USERNAMES OF OTHER USERS ON THE SYSTEM. HAS SWITCHES TO ALLOW FOR LOOKING ACROSS THE NETWORK OR AT OTHER FILES CONTAINED ON THE SYSTEM. WHOISUAF.EXE PROGRAM IS INSTALLED SO THAT IT LOOKS AT THE SYSUAF.LIS FILE. THIS PUTS A LAYER OF SECURITY BETWEEN YOU AND THE ARTFUL HACKER LOOKING FOR USERNAMES. GENERALLY HE WON'T BE LOOKING FOR A PROGRAM LIKE WHOIS. WHOA1.EXE PROGRAM ALLOWS YOU TO SCAN A ALL-IN-ONE NETWORK.DAT FILE FOR A ALL-IN-ONE USERNAME. HELPFUL WHEN YOU NEED TO KNOW HOW TO ADDRESS MAIL TO A1 USERS USING THE MRGATE FACILITY.