Unofficial cheats:
                      To be able to choose what mission you'd like to do next - Start the Rainbow Six
                      executable with "shelljump 88" added to the end (ex: d:\Rainbow
                      Six\rainbowsix.exe shelljump 88) it will unlock all the missions and allow you to
                     play any of them instead of having to beat them one by one.

                      Official cheats:
                      Single player cheatcodes are created by the developers of games, to be able to
                      control their game if they want to be able to check something, without the worry of
                      being killed by the enemy in the process. Some are there just for the fun of it. I
                      basically use them for recon, because if you know every inch of the terrain by
                     heart, it makes it a lot easier to survie. Activate the cheatcodes by hitting Enter and
                      typingthem into your chatbox. Here are some of the known "Cheatcodes" that I
                      know of;

                          silentbutdeadly - Kills everyone around you, including your teammembers.
                           fastactionresponseteam - replaces all the equipment jangling sounds to a
                           "fart", but unlike silentbutdeadly it won't kill anyone around you.
                           turnpunchkick - Turns all the characters in the game into 2D animation.
                           1-900 - Makes all the characters torso get big everytime they breath.
                           clodhopper - Turns the hands and feet of all the characters, big.
                           meganoggin - Makes your head humongous.
                           bignoggin - Makes your head big.
                           5fingerdiscount - Returns your ammo to full.
                           explore - Turns off victory conditions.
                           nobrainer - Turns off AI.
                           stumpy - Makes all the characters stumpy.
                           avatargod - Nothing can kill you.
                           teamgod - Nothing can kill you or your team.
                           debugkeys - enables debukeys

                      If you enter debugkeys, you can press F10 to enter debug mode. Then you can use
                      these keys for various purposes;

                           A - Artifial Intelligence On/Off
                           M - Freezes you, most likely AI turned off for just YOU not teamates.
                           1 and 3 on keypad - increases or decreases screenresolution.
                           - and + on keypad - zoom (limited)
                           F6 - Look through the eyes of other people in the mission.
                           F7/F8 - Kill yourself
                           F9 - Return to the player you were using to complete the mission.
                           F10 - Switches from Debug mode to Normal mode
                           F12 - Level Skip
                           [ and ] - Brighten and darken the screen.
                           < and > - Make the player float up or down.
                           o - Zoom in from F1 view
                           p - Zoom out from F1 view
                           V - Rotates View
                           B - Brings back to normal view
                           / - Brings you down from floating