Ah, yes; thanks for the clear explanation.

On 11 Mar 2009, at 12:42, Lukas Renggli wrote:

>> I still don't understand where the "nil" comes form, though.
>
> When you evaluate a continuation the current computation is *aborted*
> and the captured one is *resumed*.
>
> Thus, when evaluating
>
>    c2 := c value: 15
>
> no assignment to c2 happens and the variable remains what it was  
> before (nil).