menu * {
  Calculator:/dialog -m Calculator Calculator
}
dialog Calculator {
  title "Calculator"
  size -1 -1 149 36
  option dbu
  edit "Calc Here", 1, 10 9 39 11, autohs
  button "Calc Out", 2, 55 9 41 12
  menu "Calc", 3
  menu "Solution", 4
}
on *:dialog:Calculator:sclick:2:{
  //did -a Calculator 4 . $calc($did(1))
}