diff: typeclass user documentation

[David Matthew OVERTON]

I wrote:
> 
> > +:- pred distance(P1, P2, float) <= point(P1), point(P2).
> > +:- pred distance(in, in, out) is det.
> 
> s/pred/mode/ in the 2nd line.

Sorry, I didn't see your revised diff before I sent this.


David
--
      David Overton              |  dmo at cs.mu.oz.au
http://www.cs.mu.oz.au/~dmo/     |  david at bjs.com.au