{HEAD ~ Some event} initiates {TAIL ~ the subroutine} for loading data into shift register 10, or conversely, for reading data out of the shift register, such as an impeding power interruption as discussed previously 
{ HEAD ~ Some event } initiates { TAIL ~ the subroutine } for loading data into shift register 10 , or conversely , for reading data out of the shift register , such as an impeding power interruption as discussed previously
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH