### 7.8.4 glass.inc - Glass interiors:

`I_Glass1, ..., I_Glass4`
  `I_Glass_Fade_Sqr1` (identical to `I_Glass1`)
  `I_Glass_Fade_Exp1` (identical to `I_Glass2`)
  `I_Glass_Fade_Exp2` (identical to `I_Glass3`)
  `I_Glass_Fade_Exp3` (identical to `I_Glass4`)
  Glass interiors with various fade_power settings.
`I_Glass_Dispersion1, I_Glass_Dispersion2`
  Glass interiors with dispersion. `I_Glass_Dispersion1` has an approximately natural glass dispersion. `I_Glass_Dispersion2` is exaggerated.
`I_Glass_Caustics1, I_Glass_Caustics2`
  Glass interiors with caustics.