{HEAD ~ Specific considerations} govern the designers selection of the amount of {TAIL ~ delay} provided by the reference delay unit 205 
{ HEAD ~ Specific considerations } govern the designers selection of the amount of { TAIL ~ delay } provided by the reference delay unit 205
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH