"How does a spec script differ from a shooting script? What kind of fasteners should one use to bind a script? How did the term MOS come to mean without sound? You'll find the answers to these pressing questions and much more in David Trottier's eminently usable "Screenwriter's Bible". The avuncular Trottier - a writer-producer, script consultant, and seminar leader - has written a friendly guide through the Hollywood morass. He touts it as six books in one: it's "a screenwriting primer, a scree...