Library Items?

Hi,
in the library pallette, could someone please explain to me what the “Folder” and “Generic Object” are both used for.

Thank you in advance.

Folder is to create a folder in Navigator (left panel) and must be dragged over it.
Generic Object is to be dropped over a window, to create a generic object. Normally a generic object is then changed its superclass to match a precise object. This is something you could also do in the old RS2012.