Presumably the best you can do is swap around those ID numbers to point to other templates.
I see what you mean about experimentation. I'm envisioning sliders or something they used to set various environmental settings and it outputted to these nodes/knots. Each template though has those damn knots files entries which are useless without the original tools that they used to set everything. OK so all of those ID numbers in each zone (Fog, DOF, Shadow, etc) refer to ID numbers in the templates further up in the file under Database Manager.
I seem to remember coming across these zones in another html file. Ayep this is kind of similar to Far Cry 2 though expanded a lot. There are various zones the world space is chunked up into.