byond - Modules - Types

code/_onclick/hud/rendering/plane_master.dm

/atom/movable/screen/plane_master/game_worldContains most things in the game world
/atom/movable/screen/plane_master/blacknessPlane master handling byond internal blackness vars are set as to replicate behavior when rendering to other planes do not touch this unless you know what you are doing
/atom/movable/screen/plane_master/lightingContains all lighting objects