On Fri, Sep 5, 2014 at 4:46 AM, Arne Goedeke el@laramies.com wrote:

I think that is a hilfe effect.

Yeah, that's Hilfe's result history. Visible thus:

object c=Stdio.File(); _refs(c);

(1) Result: 2

c=c;

(2) Result: Stdio.File(0, 0, 777 /* fd=-1 */)

_refs(c);

(3) Result: 3

c=c;

(4) Result: Stdio.File(0, 0, 777 /* fd=-1 */)

_refs(c);

(5) Result: 4

values(__);

(6) Result: ({ /* 5 elements */ 2, Stdio.File(0, 0, 777 /* fd=-1 */), 3, Stdio.File(0, 0, 777 /* fd=-1 */), 4 })

ChrisA