I think the most important but often overlooked aspect of the adoption of Markdown is how plain text has made a comeback. There are many Markdown variation and flavors. Most are still used for Markdown’s original purpose—turning text into HTML. But one project has built on the idea of markdown and is using plain text to fill a different need.
The Fountain project has created a plain text format that is designed for print (or PDF). But not just any print job, it’s only purpose is to produce properly formatted screenplays and scripts. Sadly, Ulysses doesn’t speak fountain as one of its markup styles. But I found a way to fake it.