Bilateral Blur Documentation?

Either I’m as blind as a bat or just dumb. I can’t seem to find any documentation on the Bilateral Blur node. I stumbled across this feature this weekend and ran some tests using it in conjunction with Vector Blur and Directional Blur and came across some stunning effects - but I need to know more about this feature to fully utilize it. Thanks for any help.

I just recently started using this node, and it’s amazing the things it can do.

AO smoothing is only the beginning…