Screenwriting tips

I've always wondered how much you should describe action in a screen play and found this page very helpful

http://www.ibiblio.org/cdeemer/rhetoric.htm

William Goldman's Butch Cassidy and the The Sundance Kid screenplay knocks most of these theories into a cocked hat. It's the most glorious piece of overwriting in the history of screenwriting - at one point he calls for The Longest Tracking Shot In The History Of The World - but what he does, crucially, is capture the spirit and tone of the film. That, to me, is the key.