{HEAD ~ The method} 1 further including {TAIL ~ the step} of providing a protective, light transmitting coating on the external surface of said defined envelope 
including
{ HEAD ~ The method } 1 further including { TAIL ~ the step } of providing a protective , light transmitting coating on the external surface of said defined envelope
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH