If you do not want a file or folder any more, you can delete it. When you delete an item it is moved to the Trash folder, where it is stored until you empty the trash. You can restore items in the Trash folder to their original location if you decide you need them, or if they were accidentally deleted.

The file will be moved to the trash, and you’ll be presented with an option to Undo the deletion. The Undo button will appear for a few seconds. If you select Undo, the file will be restored to its original location.

To delete files permanently, and free up disk space on your computer, you need to empty the trash. To empty the trash, right-click Trash in the sidebar and select Empty Trash.