{HEAD ~ The control signal generator} is configured to generate {TAIL ~ a control signal} in response to user engagement of the record command key 
is configured to generate
{ HEAD ~ The control signal generator } is configured to generate { TAIL ~ a control signal } in response to user engagement of the record command key
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH