I can't get to that URL, David. Sorry for stirring up this discussion again. I mean no harm. I did Google search, too, but found nothing. Pavel David Fanning wrote: > > Oh, no. Not this discussion again! :-) > > Here are my raw notes for an article on the > topic I've been meaning to write for several > years now: > > ftp://www.dfanning.com/pub/dfanning/outgoing/misc/ref_extra.txt