The remarkable is not able to do split screen (for now).
Instead, you can install the [ddvk hacks](https://github.com/ddvk/remarkable-hacks) for fast switching between recent documents and a swipe to the previous document.
I'd recommend the remarkable2 as the hacker friendliness makes quite a difference
This is what my research told me last I looked too, thanks for the confirmation that this is still true. I believe RM will deliver long term, hacker friendliness goes a long way. Not sure if it's worth the price atm, but I'll look out for a cheap used one. I could do so much more critical reading if I could do it while lying down.
I'd recommend the remarkable2 as the hacker friendliness makes quite a difference