Image types (Box, Box Rear, Menu, Screenshot)

[Happy2Play 9780]

What are these image types for?  I don't see an option for these types in Metadata-Services-Content anywhere.

 

Edited January 24, 2016 by Happy2Play

[Luke 42077]

Those are only used by games, although they were named generically to allow for possible future use by other media types, which hasn't really happened. although it could for music with the rear image.