I’ve been working with Jonathan Poritsky, Stu Maschwitz and Martin Vilcans on bringing Stu’s Screenplay Markdown proposal to Marked. It may eventually be incorporated directly into Marked, but for now we have a working solution as a custom processor/custom CSS combination.
This is a companion discussion topic for the original entry at https://brettterpstra.com/2011/12/08/calling-screenwriter-nerds