Found this while trying to establish the legal status of the PDF of "Ignition!" that I came across. It's been quite a while since I read a web page that made me laugh until I cried. This is one such. I predict that the effect will be extremely selective, but for those who it works for it's a good read. Probably requires at least a smattering of chemistry and/or rocketry to start to get you going. Maybe not. If you are not at least grinning broadly by the second quotation it's probably not for you. The 85 reader comments form an integral part of the experience. Even #85 got a grin and #84 set me laughing again. Definitely a matter of perspective. http://pipeline.corante.com/archives/2010/02/23/things_i_wont_work_with_dio= xygen_difluoride.php Russell McMahon --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .