·Shader Selection 

	This is done on one of the six pop up menus in this box. When the
program starts up it searches in /NextLibrary/Shaders,
~/Library/Shaders, and /LocalLibrary/Shaders. To examine and
modify the intrinsic values of the shader, press the "Inspect¼"
button to the right of the appropriate pop up menu. Any shaders it
finds in those directories it places in the appropriate pop up menu.
For information on programming your own shaders, see The
Renderman Companion, by Steve Upstill and also shader(1) in the
UNIX man pages.  Note: The shaders selected in these fields are
only used when Photorealistically rendering the scene, during
rotation the object has NULL values in all of it's shaders.