content: on accumulator(n)
  	-- Returns a new script object
  	-- containing a handler.
  	script
  		on call(i)
  			set n to n + i -- Returns n.
  		end call
  	end script
  end accumulator
  
  set x to accumulator(10)
  log x's call(1)
  set y to accumulator(5)
  log y's call(2)
  log x's call(3.5)
  -- Event Log: (*11*) (*7*) (*14.5*)
  