At all other times {HEAD ~ the clock input} is blocked or clamped to prevent {TAIL ~ spurious signals} or power surge transients from altering the stored data 
is clamped to prevent
At all other times { HEAD ~ the clock input } is blocked or clamped to prevent { TAIL ~ spurious signals } or power surge transients from altering the stored data
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH