rgl           all demos
hist3d        3d histogram using basic building blocks.
bivar         Bivariate densities kernel smoothing using rgl.surface and alpha-channel.
abundance     Animal Abundance, visualization of multi-dimension data using multiple techniques.
lsystem       plant modelling using a turtle and l-system.
subdivision   Subdivision surfaces using generic meshes (preview of generic 3D interface).
regression    bivariate regression.

