{HEAD ~ This invention} relates to {TAIL ~ surveying} and to the use of Satellite Positioning System information to improve the accuracy and productivity of such surveying 
relates to
{ HEAD ~ This invention } relates to { TAIL ~ surveying } and to the use of Satellite Positioning System information to improve the accuracy and productivity of such surveying
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH