Federated folders can contain objects or {HEAD ~ members} that are documents and folders stored in {TAIL ~ other heterogeneous datastores} 
Federated folders can contain objects or { HEAD ~ members } that are documents and folders stored in { TAIL ~ other heterogeneous datastores }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL