It was an early experiment in symmetry before I learned how to do it properly. Setting it up the right way turns it into something altogether different. I keep playing with it from time to time though... maybe someday it'll get posted.
You know it took me forever to learn those things, they escaped me for the longest time. Finally Marko helped me with the upright mirrored plane option that he uses a lot, and Tex helped me out with these. I owe it all to them!