Items not assigned to any folders in your database. Zoot automatically collects these items in a special Orphaned Items folder.
Here is a typical example of how an item can become orphaned. You create a new item and it ends up assigned to the New Entries and Recent Entries folders only. After a couple of days, the item is removed from the New Entries folder, then after 30 days the item is removed from the Recent Entries folder. At this point the item becomes orphaned and Zoot places it in the Orphaned Items folder.