Don't worry Your entry will not be displayed onscreen. You'll have to hold [Left Shift] and press [Keypad Minus]. Release the keys, then enter one of the following codes to activate the corresponding cheat function.
flush - Flush video memory.
freeze - Freeze game.
crash - Forced crash dump.
endmission - End mission..
missions - All single player missions.
savegame - Save game.
topography - Generate map in .EMF format.
campaign - All campaign missions
getallgear - All armory items.