This allows the platform to travel in a straight line through three dimensional space which may be important when using embodiments of the invention in {HEAD ~ locations} that do not allow for {TAIL ~ an arced path} 
not allow for
This allows the platform to travel in a straight line through three dimensional space which may be important when using embodiments of the invention in { HEAD ~ locations } that do not allow for { TAIL ~ an arced path }
OTH OTH 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 OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL