OK, this may not make much sense if you have never done any computer programming. But to me, it is utterly delicious. http://www.americanscientist.org/issues/id.3489,y.0,no.,content.true,page.1,css.print/issue.aspx John Sent from my iPad------------------------------------------------------------------ To change your Lit-Ideas settings (subscribe/unsub, vacation on/off, digest on/off), visit www.andreas.com/faq-lit-ideas.html