{HEAD ~ An open enabling link}, for example output 306 being programmed logically high, is equivalent to {TAIL ~ a fuse}, here fuse 130, being open 
is equivalent to
{ HEAD ~ An open enabling link } , for example output 306 being programmed logically high , is equivalent to { TAIL ~ a fuse } , here fuse 130 , being open
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH