This is a simple mel script which automatically creates oriented UVs for the selected meshes and a UV layout for all objects in the current selection for a single texture sheet. It can be used to create quick and easy UVs .
More details in this blog post:
https://www.artstation.com/vrntech/blog/n7n7/maya-mel-quick-uvs-script-vrnautomap
The script can be downloaded for free from Gumroad:
https://gum.co/vrnAutoMap