initiating a download of a selected file segment of the suspect file via {HEAD ~ a specific external identifier} on {TAIL ~ the file sharing network} 
on
initiating a download of a selected file segment of the suspect file via { HEAD ~ a specific external identifier } on { TAIL ~ the file sharing network }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL