You can view all deleted PDFs, folders, study notes in the trash, the trash will not save any deleted pages.

• Restore from trash
  1. You can restore deleted files to their original location
• Restore backup Files
  1. If you have backed-up their files before, they could restore the permanently deleted files through back up
• Restore Apps
  1. If users have backed-up their files before, all backup files could be restore when reinstalling the app
• Clear Trash
  1. When empty the trash, all deleted files will be permanently erased, and unbacked up files will not be restored