I am trying to figure out how to use the material editor in the April 2015 nightly build. I've searched high and low for some kind of instructions or documentation on how to use it, but cannot find any.
I want to take one of the existing skins from the program and "tweak" it to make it look more realistic and to fill in missing areas. I was hoping to use Blenders projection painting but that's not possible since if you move the rig to a position where you could do that, it only works in the exported pose and you can't get to places like under the arm pits etc...
So I thought I'd try adjusting the skin that is in MakeHuman already, and save it for use on all future models. Today I found out about the materials editor, but when I try to use it I can't see how it could possibly be of any help that way. I load my model and apply one of the skins from the materials tab and I can see my model, some statistics, and I can see the UV map. However, there doesn't seem to be a way to edit the UV map, or anything else for that matter. The UV map cannot be exported, the only options, when I click on the three dots, is to open a file. Is this actually meant to be for editing materials? Does it export and then import materials back in once you've edited them in a 2d program?