On Mon, 5 Jul 1999 SJSVOB@aol.com wrote: > This would serve as a warning that I was descending without having opened the > valve. > Wouldn't a spring-loaded safety valve(like those used on steam boilers to prevent overpressure) work better, AND be automatic? --- Paul Anderson hacker@geeky1.ebtech.net "This is Maurice, our sheep-herding carrot." http://www.hpv.on.ca sys admin http://www.freeworldbbs.org