Oh, I think I'm starting to get it now. Tattoo doesn't modify UV coordinate mappings, but just the file that's being used to texture the model. So it doesn't allow a texture map that's already been made for a model to be shifted or scaled across various sections of the model (I guess we do that from the UV texturing window in Lightwave or some other app).
Forgive my ignorance.
Forgive my ignorance.