I’d like to add some kind of split pane setup at some point, but the UI is (obviously) not set up to support it. Maybe some day!
Thanks for replying.
I tried something yesterday that seems to work quite well: Just open a second instance of the app and snap them to each half of the screen on a 4K monitor.
Maybe consider (some day) adding an Open File in Another Instance menu item like Notepad++ has?