Material( face, argument, value,...value )
face can be Front, Back, or Front_and_back. (Note that the material properties can be set separately for the front and back faces of a polygon.)
Table 12.5 shows the arguments and default values for Material arguments.
AMBIENT
DIFFUSE
AMBIENT_AND_DIFFUSE
Both AMBIENT and DIFFUSE
SPECULAR
SHININESS
EMISSION

Help created on 10/11/2018