content: foo = 0
  
  ' count to five
  while foo < 5
      print foo
      foo = foo + 1
  end while
  
  ' count down to zero
  while foo > 0
      print foo
      foo = foo - 1
      ' but stop at three
      if foo = 3 then exit while
  end while
  
  ' nested while loops to compute 4 * 2
  total = 0
  i = 0
  while i < 5
      j = 0
  
      while j < 3
          total++
          j++
      end while
      i++
  end while
  print total