On Sun, Jan 13, 2013 at 10:26 AM, Linda Alvord <[email protected]> wrote:
> It seems to need  d."0  but I can't seem to figure how to do it.

You can use "0 on the result of d.  For example:

(d. 1) (" 0)

I do not think  you should have to do this, but it works.

-- 
Raul
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