New 16: New Pigments are available, thanks to Pocedural Texturing. Being more specific new
Marble, Wood and Lava style pigment can be added to every shape.
New 19: Shapes variable can be defined in the input file. In this way complicated objects
may be defined with a name, created wherever is convenient, and then called back with the name and eventually transformed
to be placed as desired.
Follow tutorial 4 for more information