{HEAD ~ The different color codes} provide for easy identification of {TAIL ~ the proper location} for the rail assembly 
{ HEAD ~ The different color codes } provide for easy identification of { TAIL ~ the proper location } for the rail assembly
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH