> From: Roger Hui
>    m&{ i.$y
> 11 12
>  7  0

> From: Mark D. Niemiec
>    ((<1;2 3),<0;7) { i.2 9 NB. note the 0 in the result
> 11 12
>  7  0

Thank you, I see it now. But it was kind of like one of those myseious
pictures "find a face of old woman" or "find seven boys and a dog".

> From: "Brewer, Andrew"
>    '*' (({1;2 3),{0;7) } 2 9$'-'

Yes, that's it. Thank you Andrew. This will solve my particular problem.

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