ENVIRONMENT Section
The ENVIRONMENT section (if it is included at all) contains definitions of environment variables (the background of the scene: an image, a texture, or a color), atmospheric effects (how light travels between objects), photographic effects, global dynamics variables, and master lighting.
The ENVIRONMENT section is the place for definitions of:
The ENVIRONMENT section (if present) begins with the word ENVIRONMENT in all caps on a separate line with no punctuation. The section ends where the next section begins.
The following items are described in this section: