### 3.7.6 finish.inc

This file contains some predefined finishes.

`Dull`
  Dull, with a large, soft specular highlight.
`Shiny`
  Shiny, with a small, tight specular highlight.
`Glossy`
  Very shiny with very tight specular highlights and a fair amount of reflection.
`Phong_Dull`
  Dull, with a large, soft phong highlight.
`Phong_Shiny`
  Shiny, with a small, tight phong highlight.
`Phong_Glossy`
  Very shiny with very tight phong highlights and a fair amount of reflection.
`Luminous`
  A glowing surface, unaffected by light_sources.
`Mirror`
  A perfectly reflective surface, no highlights or shading.