Jan Stary <h...@stare.cz> writes:

> The offending portion is:
>
> .Bd -literal
> $ ecurve 7 0 3
>        
>   *  * 
>   *  * 
>    **  
>   *  * 
>    **  
>    **  
> .Ed
>
> I can just delete the trailing whitespace and the reader will see the same,
> but the whitespace actually has a meaning here: it's a 7x7 ascii bitmap
> of an elliptic curve (y^2 = x^3 + 3 over Z_7).

Can you draw a box around it? E.g.

    +-------+
    |  *  * |
    |  *  * |
    |   **  |
    |  *  * |
    |   **  |
    |   **  |
    +-------+

Allan

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