In {TAIL ~ some alternative embodiments}, {HEAD ~ terminal 501 m} might communicate via other means with content terminal 502 n 
In
In { TAIL ~ some alternative embodiments } , { HEAD ~ terminal 501 m } might communicate via other means with content terminal 502 n
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH