The soft_env_sphere box can be used
only with a map to define the reflected environment of the surface.
The soft_color_2D box is used to
give the location of the picture file to use as the map. The
EnvironTex box defines how that map
is used to create the reflection. The ROT button can be used
to rotate the reflection about the object. These four boxes need
to be used in conjuction with one another. This is the SoftImage
implimentation of a Mental Ray 'environment shader':
