I agree with you Arnie.d, I think the grain adds the perception of detail also, but it was a somewhat unintended casualty of the local stabilization that I did. Oh well. ;)
Anyway, I have updated the script on page 1, and it now reflects what I used to generate the pic in this post. I have not yet annotated the script, and I have some more things that I would like to do, but it's there for your viewing pleasure.