One more thing: By request, I have put my Physics Software Rant article back on-line, outdated though it is. Now available here: http://www.starplot.org/articles/physics-software-rant.html Regrettably, it's unlikely that I will have any time to update it in the near future. best regards, -- Kevin B. McCarty <kmccarty@gmail.com> WWW: http://www.starplot.org/ GPG: public key ID 4F83C751