I wrote:

>  Further, the display, while empty, can can be 
>  arbitrarily tall and wide, depending on the rank
>  of    (f"0) 0  .

I should have written:

   Further, the display, while empty, can be 
   arbitrarily tall and wide, depending on 
   the shape of  f"0 {.,y  .

That is, the size of the empty display depends upon the shape of the result, 
not merely its rank, and the scalar that  f  is
tested upon isn't necessarily  0  , it is a scalar of the same type as  y  
(i.e. a scalar fill of  y  ).

-Dan

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