{HEAD ~ An array} of M×N actuators for {TAIL ~ use} in an optical projection system wherein each of the actuators consists of: 
{ HEAD ~ An array } of M×N actuators for { TAIL ~ use } in an optical projection system wherein each of the actuators consists of :
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH