doom [options]*

Options:
-2                        Pixel double window for X. (does not work)
-3                        Pixel triple window for X. (does not work)
-4                        Pixel quadruple window for X. (does not work)
-config file              Use this config file instead of $HOME/default.cfg.
-deathmatch               Set rules for a multiplayer deathmatch.
-devparm                  Puts you in developers mode.
-disp displayname         Use this display for X (default: current screen).
-episode episode          Start at episode 1 to 3. Shareware only has 1.
-fast                     Make the monsters fast as in nightmare mode.
-file file.wad            Include an external wad file.
-grabmouse                Grab the mouse in the X version.
-loadgame slot            Load saved game from slot 1 to 6.
-maxdemo size             Specifies the maximum size of a LMP recording.
-midi                     Put music out to /dev/midi instead of /dev/fm.
-midi devname             Put music out to devname. It can be on another node.
-mqueue player# nid ...   Network multiplayer using POSIX Mqueue manager.
-net player# host ...     Network multiplayer using TCP/IP Socket manager.
-nomonsters               Don't create any monsters. Usefull for deathmatchs.
-nomouse                 *Don't look for a mouse.
-nomusic                 *Don't play music.
-nosfx                   *Don't play sound effects.
-nosound                 *Don't play music or sound effects.
-novideo                 *Don't switch to graphics mode for console version.
-playdemo                 Play the demo (default).
-port                     Specify a different IP port (default: 5029).
-record file              Makes a demo recording until you finish or die.
-respawn                  Respawn all monsters 8 seconds after you kill them.
-skill level              Set skill from 1 (baby) to 5 (nightmare).
-stereo                   Attempt to generate stereo sound effects.
-timedemo file           *Calculates the number of times the screen is
                          redrawn when playing a demo
-turbo scale              Run faster. Scale can be 10 to 400 percent.
-warp episode level      *Warp to episode (1-3) level (1-9)


To use most of these options, start DOOM by typing:
"doom -devparm <parameter> <more parameters>".  If the "-devparm" parameter
IS needed, the parameter will be marked with a star (*).  Most of these
parameters can be mixed and matched to create different effects.  For
instance, typing "doom -devparm -warp 1 8 -record demo01 -respawn" would
record a demo on episode one, level eight, with monster respawn.  Lastly,
typing F1 during development mode will allow a 256 color screen capture in
PCX format.


Some key codes:

Spacebar or Escape: Bring up main menu
F1: General help and DOOM info
F2: Load saved game
F3: Save game
F4: Sound volume
F5: Change detail level 
F6: Quicksave
F7: End game
F8: Toggle messages on or off
F9: Quickload
F10: Quit game
F11: Gamma correction (adjust background brightness)
F12: Spy mode (in cooperative play only)
Tab: Display automap, 0 for full or zoom view, +/-, M=mark, C=clear, F=follow
+ and -: Change screen size (on console version)
Up/down arrows: Walk forward or backward
Left/right arrow: Turn left or right
Left or right shift: Causes up/down arrows to become running speed
Alt: Causes left/right arrows to become sidestep

Use the numeric keys across the top of the keyboard to select a weapon:

1 = Fist 
2 = Pistol 
3 = Shotgun
4 = Chaingun
5 = Rocket Launcher
6 = Plasma Rifles
7 = BFG 9000

Ctrl: Fire weapon
t: Talk to another player in multiplayer mode
b: Talk to brown player
i: Talk to indigo player
g: Talk to green player
r: Talk to red player

MOUSE: If you are using a mouse, use button 1 to shoot and button 2 to walk 
forward. Double-click button 2 to open doors and activate switches. With a 
three-button mouse, use the third button to strafe. 


Cheat Codes: (Type in from keyboard during game play. Most are toggles)

iddqd           Degreelessness mode (God mode).
idkfa           Very Happy Ammo (full ammo, 200% armor, all weapons).
idspispopd      No clipping (you can walk through walls).
idbehold        Displays menu (followed by S, V, I, R, A, or L for choice).
idclev          Warp (followed by episode number and level number).
idmypos         Displays your coordinates in hex.
idchoppers      Gives you the chain saw (long story behind the message).
iddt            Toggles Automap between normal, full, and full with objects.
                (enter when looking at the Automap).
