{HEAD ~ A frame support structure} is automatically positioned to a frame receiving {TAIL ~ position} where the frame is placed thereon 
{ HEAD ~ A frame support structure } is automatically positioned to a frame receiving { TAIL ~ position } where the frame is placed thereon
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH