I recently discovered fountain, a markdown syntax specifically designed for script writing. i have done a couple of experiments with it, both quite successful. The real test though is how well it imports into Celtx, my script writing software of choice. And I must say it works pretty well. i had to make a couple of minor corrections with parentheticals. I made a couple of errors when I composed the base document, but that was easily remedied and when I corrected the base document, it imported cleanly.
I have been an avid user of Celtx for years. The product is solid and has a robust user community. Their updates are well thought out and their Studio application/eco-system that supports more than just writing scrips is great for those on a budget. The only negative is that it is web based (with some features available for iOS). In most cases this is not a big show stopper, unless, like me, you are disconnected when you do your primary writing. The iOS apps do allow for off-line editing, but what about when I am using my Linux desktop?
Celtx no longer supports their desktop client (and I never could get it to run on Linux properly), so for these situations, the fountain format is a great find. It has a robust ecosystem around it and is also good for those who are just starting out and looking for an entry into script writing.
Experienced script writers will like a number of power features that allow you to go from treatment to script in the same document, depending on how you post-process it. And because it is an open standard, it allows you to store and reprocess scripts over time. A major plus as the software landscape is always changing.
Another nice feature is the ability to embed script segments into a blog with a nice WordPress plug in. As you can see, it is quite a nice little feature, and no additional work on my part than wrapping the text.
INT. LIVING ROOM - DAY
The door crashes open and BILL TURNER crashes into the room, blood pouring from two gun shot wounds. He is holding his abdomen as he staggers and falls to his knees. ALICE GEORGE is sitting on the couch.
Who are you! What are you doing here?
Currently bleeding. Call 9-1-1!
Bill falls to the floor.
If you are not already familiar with it, I encourage you to look into it and see if it fits your needs. I am more than happy with what it provides.