In {HEAD ~ one embodiment}, each peer that “opens” a group pipe may make {TAIL ~ an endpoint} available to the pipes transport 
In { HEAD ~ one embodiment } , each peer that “ opens ” a group pipe may make { TAIL ~ an endpoint } available to the pipes transport
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH