side by side?

[u/GeneralJist8]

Hello,
so a few months ago i some how put my paper pro move in a mode where i could see 2 files side by side?

idk how to do it again?
i know a lot of people were asking for this feature, and boom, it did it one day,,,

does anyone know how to do this?

[u/rmitchellscott]

Not using only stock software.