Wikimedia says: From around 1950, single sentence spacing became standard in books, magazines and newspapers. However some sources still state that additional spacing is correct or acceptable. The debate continues, notably on the World Wide Web—as many people use search engines to try to find what is correct. Many people prefer double sentence spacing for informal use because that was how they were taught to type. There is a debate on which convention is more readable, but the few recent direct studies conducted since 2002 have produced inconclusive results.
Yes, you need a treatment before script.
Begin with a preliminary treatment, a page or so of prose describing what your production will be about. I do this when a lot of ideas have been kicked around, or when the production is long and/or complex.
I don’t use a preliminary treatment when (more…)
The Washington Post reported today that the Heartbleed bug may cause major disruptions to the Internet over the next several weeks.