Fountain is a simple markup language for writing screenplays in plain text.

With Fountain, you can write a screenplay in any text editor without worrying about spacing and margins and indentation. Once you put it through a conversion utility like Highland, it will come out in proper screenplay format.

So this:

JIRO (O.S.)
Something smells fishy…

Becomes this:

Since Fountain is just plain text, it’s future-proof. You’ll never run into problems with obsolete file formats or incompatible software.