Modifying an underlying map for a clothing item
I am not sure what the proper terminology is for the underlying "grid" or "texture/surface template" that dictates the positioning and appearance, in this case, of clothing. I am dealing with the below item, which is:
http://wiki.daz3d.com/doku.php/public/read_me/index/15615/start . (designer: 4blueyes)
If it is allowable, I would like to edit the underlying clothing map/template file (this is what I need help with), as well as the overlying *jpg file (I can do this) in order change the appearance of the item (zipped higher, collar-shape-change, sleeveless, etc.).
Changing the surface image file is fine but it reveals the underlying texture-map, or whatever, and I don;t know where I edit that.