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