I ran across this video from a year ago by Chris Maiorana on using Emacs as a typewriter. By that he means producing a publishing industry standard format manuscript for your fiction. The trick is to use the sffms LaTeX package. The resulting manuscript uses a monospace font (usually Courier), is double spaced, and generally looks like it was produced on a typewriter. The idea is that it’s easy for editors to read and annotate.
The sffms package is easy to use. Most everything you need to know is covered in Maiorana’s video. There are a few options that you can use to specialize your manuscript for various publishers but you can mostly just use the defaults. The sffms Manual list all the options and other commands in the package.
One of the nice things about the package is that you don’t need to know very much LaTeX to use it. It was designed for the nontechnical author. Despite that, Maiorana uses the excellent AUCTeX package for his writing environment. The only feature he uses in the video is compile and view (Ctrl+c Ctrl+a) so even using AUCTeX is simple.
Despite the title of his video, you aren’t, of course, using a typewriter when you use the sffms package. You are, in fact, using Emacs and have all the usual powerful editing commands at your command. The difference is that when you print the results, it looks as if it were produced on a typewriter.
I doubt it would be too hard to integrate the sffms package with Org mode but it’s so simple to use it directly that it’s probably not worth the effort. The video is 15 minutes, 28 seconds long so you’ll need to schedule some time but if you need to produce documents in standard manuscript form, it’s well worth your time.