menu * { 
  Calc System:calc
}
Alias calc { 
  /dialog -m Calc Calc 
}
dialog Calc {
  title "Calc"
  size -1 -1 160 60
  option dbu
  button "=", 1, 0 48 37 12, center
  button "Clear", 2, 123 48 37 12, center
  edit "  0.", 3, 0 0 160 12, right read multi
  button "-", 4, 123 36 37 12, center
  button "^", 5, 0 36 37 12, center
  button "x", 6, 0 24 37 12, center
  button "/", 7, 0 12 37 12, center
  button "+", 8, 123 24 37 12, center
  button ".", 9, 123 12 37 12, center
  button "3", 10, 94.4 12 28.6 12, center
  button "6", 11, 94.4 24 28.6 12, center
  button "9", 12, 94.4 36 28.6 12, center
  button "0", 13, 94.4 48 28.6 12, center
  button "2", 14, 65.8 12 28.6 12, center
  button "5", 15, 65.8 24 28.6 12, center
  button "8", 16, 65.8 36 28.6 12, center
  button "00", 17, 65.8 48 28.6 12, center
  button "1", 18, 37.2 12 28.6 12, center
  button "4", 19, 37.2 24 28.6 12, center
  button "7", 20, 37.2 36 28.6 12, center
  button "10", 21, 37.2 48 28.6 12, center
}