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New cvars
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r_explosiontype
Sets various types of explosions.
Values: 0 - normal (affected by gravity), 1 - normal (old style), 2 - just sprite,
3 - just particles, 4 - slight blood. I may add more if anyone requires.
Its value is 0 by default.

r_explosionlight
Turns explosion's light on/off, 1 by default.

r_rocketlight
Turns flying rocket's light on/off, 1 by default.

r_rtrail
Turns flying rocket's trail on/off, 1 by default.

r_gtrail
Turns flying grenade's trail on/off, 1 by default.

r_r2g
Replace the rocket model with grenade, 0 by default.
(popular in deathmatch)

cl_truelightning
Makes the lightning gun's bolt more precise, 0 by default.
Can be 0.0 (off) - 1.0 (most precise).

gamma (gl_gamma in GL) and contrast (gl_contrast in GL)
One of the most important features. These are for your viewing pleasure

scr_scalemenu
Scales the menu to fit for any resolutions, 1 by default.

scr_centermenu
Makes the menu centered, 1 by default.

scr_centersbar
Makes the status bar (hud) centered, 0 by default.

cl_sbar
Toggles between transparent (0) and old/original (1) huds, 0 by default.

v_gunkick
Turns weapon's jarring every time when firing on/off, 0 by default.

r_powerupglow
Turns powerup glow around player's body on/off, 1 by default.

scr_consize
Adjust the console's size, 0.5 (half size) by default.
Can be 0.0 (nothing visible) - 1.0 (fully visble).
NOTE: when the console is pulled down, you can also adjust the size
with using the ctrl+up or ctrl+down keys.

scr_printstats
Print actual statistics (time, secrets, kills) to the upper right corner
of the screen, 1 by default.
Values: 0 - off, 1 - always on, 2 - only on if some reasonable event happens.

scr_printstats_length
If scr_printstats is set to 2, the printing takes as long as it's set in this
cvar, 0.5 by default. The value represents seconds.

dem_rewind
Toggles between normal and backward demoplaying, 0 by default.
Only works when playing a demo.

show_speed and show_fps
Their functions speak for themselves.

r_fullbrightskins
Makes player(s)'s skins fullbright, 0 by default.

mapname
Contains actual map's name, for built-in use.

cl_bonusflash
Turns pickup flashes on/off, 1 by default.

cl_muzzleflash
Turns muzzle flashes (flashes when firing) on/off, 1 by default.

v_contentblend
Turns liquid blends on/off, 1 by default.

v_damagecshift
Turns damage flashes on/off, 1 by default.

v_quadcshift
Turns quad damage's blend on/off, 1 by default.

v_pentcsift
Turns pentagram's blend on/off, 1 by default.

v_ringcshift
Turns invisibilty's blend on/off, 1 by default.

v_suitcshift
Turns environment suit's blend on/off, 1 by default.

r_viewmodelsize
Adjust the amount of your weapon to be visible, 1 by default (fully visible).
Can be 0.0 (not visble, equals "r_drawviewmodel 0") - 1.0 (see above).
This is useful for people using bigger fovs than 90.


The following ones are only work in GL:

gl_interpolate_animation and gl_interpolate_transform
fenix@io.com's popular code, both are 1 by default.

r_explosionlightcolor
Sets the color of explosions glows.
Only works if r_explosionlight is on.
Values: 0 - default, 1 - blue, 2 - red, 3 - purple, 4 - random.

r_rocketlightcolor
Sets the color of flying rockets glows.
Only works if r_rocketlight is on.
Values: same as for r_explosinlightcolor.

gl_conalpha
Sets the transparency of the console, 0.8 by default.
Can be 0.0 (totally transparent) - 1.0 (not transparent).

r_skybox
Sets a custom skybox, "" by default (no skybox).
See more info about this at the "setsky" command.

gl_colorlights
Turns colorful lights on/off, 1 by default.
This is the control for both dynamic and static colored lights.

scr_sshot_type
Sets the type of screenshot image, "tga" by default.
Can be "tga" or "png".

gl_waterfog
Adds fog inside (not just water, but) all kinds of liquids, 1 by default.
Values: 0 - off, 2 - realistic, other - normal.

gl_waterfog_density
For further costumizing gl_waterfog, 1 by default.
Can be 0.0 (low amount of fog) - 1.0 (high amount of fog).

gl_detail
Turns bump mapping on/off, 0 by default.
Requires hi-end systems.

gl_part_explosions
Turns QMB explosions on/off, 0 by default.
NOTE: QMB is an improved particle engine for Quake.

gl_part_trails
Turns QMB trails on/off, 0 by default.

gl_part_spikes
Turns QMB spikes on/off, 0 by default.

gl_part_gunshots
Turns QMB gunshots on/off, 0 by default.

gl_part_blood
Turns QMB blood on/off, 0 by default.

gl_part_telesplash
Turns QMB teleport splashes on/off, 0 by default.

gl_part_blobs
Turns QMB spawn explosions on/off, 0 by default.

gl_part_lavasplash
Turns QMB lavasplashes on/off, 0 by default.

gl_part_inferno
Turns QMB flames on/off, 0 by default.

gl_bouncparticles
Turns bouncing particles on/off, 1 by default.
Only works for QMB particles.

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============
New commands
============

cmdlist
Lists all console commands.

cvarlist
Lists all console variables.
toggleparticles