However, the trend is toward shorter, punchier scripts. A general rule of thumb is a page per minute. Comedies tend to be shorter than dramas. Don t cheat by widening your dialogue margins. The standard width is a maximum of 33 characters.
Wider margins make it difficult to estimate the running time.
Even worse, a wide swath of dialogue may convey the impression that your script reads slow. Run a spell-check. It s surprising how few writers do this. Simple spelling errors may be interpreted as carelessness on the part of the writer. Use a plain cover.