||The bump height can be controlled to give bumps or dents.
||The top and bottom of the bumps can be clipped to give flat plateaus and plains.
||Turbulence can be added with the size, period, noise and number of
octaves all being controllable.
||Any texture can be used to control the application of other textures.
These can be any of the RJJ colour or bump textures.
||Any colour texture can be used to control the scale of the next texture applied.
||The "jaggedness" of the dents can be controlled by changing the number of octaves.
||The density of the bumps is fully controllable.