content: sub main()
      x = box(1.9)
      y = ["a", "b", "c"]
      z = {}
      z["a"] = 0
      z["b"] = 1
      z["c"] = 2
      print "the letter is "; y[x]
      print "the number is"; z[box(y[x])]
      print type(x); " "; type(y); " "; type(box(y[x]))
  end sub
  