Similarly, {HEAD ~ a scanner} 40 may be used to receive {TAIL ~ graphical inputs} which may or may not be translated to other character formats 
Similarly , { HEAD ~ a scanner } 40 may be used to receive { TAIL ~ graphical inputs } which may or may not be translated to other character formats
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH