When the timer has expired at step 325, {HEAD ~ a second recovery function} is selected at {TAIL ~ step} 330 that will be performed if a fault occurs 
is selected at
When the timer has expired at step 325 , { HEAD ~ a second recovery function } is selected at { TAIL ~ step } 330 that will be performed if a fault occurs
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH