Raptor

+ Customer Cheat - The backspace key will restore all your energy and give
                   you a death ray, at the cost of all your money.  This
                   will only work in the registered version.

+ Debug mode - Set the environment variable "S_HOST" to the value "CASTLE"
               at the DOS prompt by typing "SET S_HOST=CASTLE" (it must be
               in caps).  Then, when you play Raptor, you become completely
               invincible, and have all the weapons at your disposal.

+ Warp - There is a level warp built into the game, so you can see any level
         you want at any time.  What you need to do is to get to the screen
         where you see the level selection (Bravo Sector, etc...).  The warp
         combination is a 2 key entry.  The keys are not to be pressed at the
         same time.  Note that you cannot use the level warp unless debug
         mode (see above) is active.

  Key 1 - Z, X, or Y (Z is Episode 1, X is Episode 2, and Y is Episode 3)
  Key 2 - Any key between Q and O on the keyboard.  Q is Level 1, and O is
          Level 9.

  This works in both the shareware and registered versions.  Note that if you
  try and warp to a registered episode from the shareware version, it will
  crash the game.

+ Other notes - With a hex editor, change bytes 27h and 28h of a Raptor saved
                game file (char????.fil) to the value FF.  When you load this
                saved game, you'll have a few million dollars to spend on
                equipment.  If you don't have a hex editor, there are some
                programs available that do this for you.  RapCheat is one;
                RapCash is another.  Both should be available at ftp.uwp.edu
                under the directory /pub/msdos/games/romulus/cheats.  Some
                people have reported problems using RapCash; I don't know if
                these problems have been fixed since or not.

+ Birthday Mode - As mentioned above, the "Birthday Mode" will automatically
                  put you into "Battle Cow" mode, and it will also play the
                  goofy Apogee theme song.  To get it, change the system's
                  date to the birthday of one of the Cygnus programmers, 
                  given below.  Any year should be ok, as long as it's not 
                  in the past:

                              March 12        Bobby Prince
                              May 16          Scott Host
                              August 28       Rich Fleider
                              October 2       Jim Molinets

                  You can also get "Battle Cow" mode by darkening the switch
                  on the "choose sector" screen, and turning on all three
                  lights on the right (for v1.0, don't turn on the middle
                  light).  You don't get the goofy Apogee theme song if you 
                  do it this way, however.