There are five display modes for the Folders / Documents in the Library:
Cover view , Cover view with captions , List View , Details View and Details View with a large Covers (iPad).
Tap to select.

  1. You can sort folders / documents by file name, type, title, author, etc., in either descending or ascending order. Tap to select and change the order.

  2. You can group folders / documents by file name, type, title, author, etc. Touch to turn on / off grouping.