At 11.12 26/11/2001 -0700, you wrote:

>As a cheap hack, the only value I would recognize as "meaningful" is -1
>since this means "I really don't know".
>
>I could make use of that in IBO. If it is returned as -1 then I can just
>ignore it and not raise an exception.
>
>To return 1 is blatantly wrong.

OK, We will see what Claudio will tell us.
Regards
Marco
P.S. is Claudio reading this list too isn't it?