Ray texture settings
ray_texture_settings controls the wobble and wiggle settings for texturing. Playing with these settings can produce interesting effects. The values take on different meaning for each ray_texture type. For example, if ray_texture is set to 3, then the three values are the power of the circular shift in X, Y, and Z directions.
In this example below, ray_texture=2, and ray_texture_settings=5 10 10.