{HEAD ~ The use} of {TAIL ~ the symmetric pin} allows automatic insertion of the pin in that the orientation of the pin relative to the board is unimportant 
of
{ HEAD ~ The use } of { TAIL ~ the symmetric pin } allows automatic insertion of the pin in that the orientation of the pin relative to the board is unimportant
HEAD HEAD HEAD HEAD HEAD HEAD 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