The distributed index may be used, for example, to route {HEAD ~ messages} between {TAIL ~ participating peers}, in identifying and authenticating peers wishing to participate, in notifying peers of newly joined peers, and in notifying joining peers of participating peers 
between
The distributed index may be used , for example , to route { HEAD ~ messages } between { TAIL ~ participating peers } , in identifying and authenticating peers wishing to participate , in notifying peers of newly joined peers , and in notifying joining peers of participating peers
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH