VRML documentation

## Known bugs and work-arounds:

Report all bugs you find to the RenderPark team.

#### Galerkin radiosity on Linux:

The result in incorrectly rendered with OpenGL (you get garbage: totally weird polygons are rendered).

Fixes:

- compile without optimization
- or: use ray casting to view the results (the computations are correct, it's really "just" a problem in the rendering)
- or: use stochastic relaxation radiosity instead of Galerkin: it has all the features and it's faster and more reliable

#### POOLS on Linux:

The memory management in recent Linux kernels cannot be beaten anymore and the current version of Pools apparently introduces all kinds of very strange errors.

Fix:

- disable it (compile with -DNOPOOLS)