Thus, in this variant of the implementation, a “trip computer” module can be provided as a software application on {HEAD ~ the device} to compute various distances, {TAIL ~ compass bearings} and times 
Thus , in this variant of the implementation , a “ trip computer ” module can be provided as a software application on { HEAD ~ the device } to compute various distances , { TAIL ~ compass bearings } and times
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH