Linden Lab has provided us with Templates and Models to help us make
Skins and Clothing for our Avatars.
However, I've found that the "templates" leave several things to be
desired. They aren't set up for accurate matching across the UV Seams,
and it's difficult to "find your place" when working with them.
The original idea to subdivide the Avatar models came from Chip
Midnight's excellent templates. However, without meaning to denigrate
them, they still weren't really what I wanted, so I made my own...