{HEAD ~ The mode selection key} is actuated to select a memo mode for inputting and printing out memo data and a calculation mode for operating {TAIL ~ arithmetic calculation} 
{ HEAD ~ The mode selection key } is actuated to select a memo mode for inputting and printing out memo data and a calculation mode for operating { TAIL ~ arithmetic calculation }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL