I haven't modded in months, RL hit me hard. I'm looking to get back into it and finish up some projects that I have had floating around for a couple years now. A couple of these mods requires some new terrain. I have a couple ideas on what I can do, but I've noticed terrain generation in the CS a few times.

I could never figure out what it is or how it works, and my search fu on the wiki failed drastically.

Can anyone help me understand what this is, what it does, and how to use it?

Any help would be appreciated