Well, many things, really.
They write original screenplays for movies.
They convert books, novels or ideas into movies.
They help producers, directors, production companies and other screenwriters fix their screenplays to get them ready for production.
They come up with ideas for any script that needs a fresh eye to make it even better.
They might even know someone to help get a movie made – but never count on that.
So – since I’ve done all these things many times, my question is –