UV coordinates assigned to the surfaces which will be recieving textures.

 From:  jbshorty
1240.2 In reply to 1240.1 
Hi Ed. Moi's Nurbs surfaces already have UV's, so you are OK for programs such as Hypershot. External editors are needed if you want to refine those UV after meshing, or for assigning UV's to meshes that don't already have UV data (such as scan data or models form sds/poly modeling programs)...

jonah