...This is ALL part of a Free Renderman Shader set called "SUPERTOON"...(It's nice that you can open RenderMan Shaders and READ STUFF about them!...

/* SuperToon.sl V1.1 Felipe Esquivel

• , abril 2002

• Toon shader with non-analitic antialiasing (controlled by delta). Difusion is modulated with

• clamping, the inflection points are lim2, lim3 and lim4. This shader is very cheap,

• reason why no border detection is allowed. Now with specular.