How do Smart Shortcuts work?

Everytime i go to smart shortcuts when editing the menu, i get a blank list…

I was under the impression that smart shortcuts would basically just be a list of all entries in an add-on… like all the sections in PleXBMC for example

So how do i use smart shortcuts? My Google-Fu is usually on point but i am coming up empty… I found something about creating smart playlists but that’s not what i want to do…