You're in luck! They do have split screen on all versions. I've used it a little, when I was writing non-sequentially for NaNoWriMo.

Go try it out! The most annoying thing about the split screen is getting rid of it and clicking on the wrong one and having to get back where I was. I also like many other features too, like the commenting or inspection pane but I didn't want to go too deep in this first post about it. I'd love to hear more of your thoughts!