This is an environment mapping light shader.
For best results, it is recommended that the __nondiffuse flag,
be used with this shader.  As environmental lighting is usually
considered part of the specular reflections.
MAP is the map file of the environment.
INT controls the intensity of the light.
LGT controls the color of the light.

This must be a string.  The default is empty.
Select the file name of the environment map to be used.
Please refer to the RenderMan3.6 Shading Language Extentions.

This must be a float.  The default is 1.0.
This controls the intensity of the light.

This must be a color.  The default is WHITE.
This controls the color of the light.

This is an environment mapping light shader.
For best results, it is recommended that the __nondiffuse flag,
be used with this shader.  As environmental lighting is usually
considered part of the specular reflections.