A relative positioning system enabling a user to return to a starting position or {HEAD ~ some other point} on {TAIL ~ the users path} 
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A relative positioning system enabling a user to return to a starting position or { HEAD ~ some other point } on { TAIL ~ the users path }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL