POV-Ray : Documentation : 1.2.3 CSG Objects
  POV-Ray 3.6 Documentation Online View Torus Object What is CSG?

1.2.3 CSG Objects

You know you have been raytracing too long when ...
... Your friends are used to the fact that you will suddenly stop walking in order to look at objects and figure out how to do them as CSGs.
-- Jeff Lee

Constructive Solid Geometry, or CSG, is a powerful tool to combine primitive objects to create more complex objects as shown in the following sections. Torus Object What is CSG?

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