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