In order to structure or collect files, create folders and save the relevant files in the respective folders. Through the menu, you can create a folder under „File“, „New“ and „Follower“. Then you can rename the folder (click right mouse button, „Rename“) and confirm with „Enter“.
To delete a folder, just click on it and then press the „entf“ button.
By dragging and letting go, you can place and move the desired folder as you wish.
If a folder was accidentally deleted, go to the „Paperbasket“ and run the „Recover“ command in the menu. However, if you want to remove the file(s) definitively, execute the delete command in the menu.