Accelerator :short cut of pull down menu.
     Reset check when you want to use function key by "OPT CCFUNC ON".
     Shift+Ctrk+char combination reaches to xe even if Accelerator check is ON,
     and follows on CCFUNC option.
  Ctrl+"A":SaveAs
  Ctrl+"C":Copy(Cut&Paste)
  Ctrl+"E":start Explorer
  Ctrl+"H":PrtScr(Hardcopy)
  Ctrl+"I":Paste(Cut&Paste Insert mode)
  Ctrl+"L":Clear(Cut&Paste)
  Ctrl+"M":open DOS prompt screen
  Ctrl+"N":New file
  Ctrl+"O":Open file
  Ctrl+"P":Print file
  Ctrl+"R":Paste(Cut&PAste Replace mode)
  Ctrl+"S":Save
  Ctrl+"T":Cut(Cut&Paste)
  Ctrl+"V":Preview(PageSetup)
  Ctrl+"X":Exit
  Ctrl+"Z":About