defining {HEAD ~ waypoints} for segments of {TAIL ~ a path} and sending the path data in segments to the second wireless communications device; and 
defining { HEAD ~ waypoints } for segments of { TAIL ~ a path } and sending the path data in segments to the second wireless communications device ; and
OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH