On 23/09/2010 00:08, Morten Høgholm wrote: > I know one could do this the way you have outlined. There are, > however, a few gotcha (as always in TeX), which is why there have been > different implementations. If you look back in time in the svn, you > will also find that there was actually both "ands" and "ors" functions > at one point. [lots of careful analysis] Morten makes a good case for the current approach: back to thinking for me! -- Joseph Wright