The Trash Bin is the place that stores deleted documents, folders, and pages, giving them a second chance to be recovered until you choose to manually delete them forever.
Now that you're in the Trash Bin, here are some things you can do.
You can sort your items using the filters at the top-center and can sort displayed items by:
If you deleted something accidentally, or changed your mind, you can return any deleted item to your library.
The item will be put back to the original folder/notebook where it was removed.
If you are certain you do not want to recover an item and will not need it again in the future, you can permanently delete it. Please note, this action cannot be undone.