View Extras

Introduced in MC16, you can right click on a file and view extra information.

https://yabb.jriver.com/interact/index.php?topic=106819.0

Files can be in subfolders called "Extras", "Scans", "PDF", "PDFs", "Booklet", "Art", "Artwork", "Cover", "Covers", "Cover Scan", or "Cover Scans".