The Favorites section contains a list of files that have been registered using the Add to Favorites action, or by tapping on an empty star on the right side of file item entries. When you mark a file as favorite, this does two things:
- The file shows up in the favorites tab.
- The file is made available for offline viewing.
To add a file to your Favorites list, long press the file to access the File Action Sheet, and select "Add to Favorites".