On Thu, May 29, 2003 at 02:10:24PM +1000, Simon Burge wrote:
> @@ -59,11 +59,15 @@ The
>  function returns a pointer to a null-terminated string describing
>  the block size, something like
>  .Dq 1K-blocks .
> -The memory referenced by
> +If the
> +.Fa headerlenp
> +parameter is not NULL the memory referenced by
>  .Fa headerlenp
>  is filled in with the length of the string (not including the
>  terminating null).
> -The memory referenced by
> +If the
> +.Fa blocksizep
> +parameter is not NULL the memory referenced by
>  .Fa blocksizep
>  is filled in with block size, in bytes.
>  .Pp

Please use
.Dv NULL

Thanks,
 Thomas