Highland is still at heart a conversion utility, letting you move between Fountain, PDF and FDX files. But we realized in testing that users often need to make minor changes, and having to round-trip through another text editor was too much hassle. So we added a basic editor. It’s not nearly as feature-rich as true screenwriting apps, but it’s surprisingly capable.
You could write a whole screenplay in Highland. I wouldn’t recommend it, but you could.
Downloaded. I suggest you go grab it as well.