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