Multiple windows (or side-by-side windows) in iPadOS

Features
1

I find the ability to have side-by-side windows of the same app useful when editing on iPadOS.

Multiple windows on iPadOS isn’t supported by every app, though certain apps do and benefit from the feature.

Some browsers support it, like Brave and Safari. Apple Notes does too.

2

Given the big screen, it would also be nice to have a split view between the markdown editor and the rendered page on the IPAD.

3

In case this would be considered alongside tabbed notes, just want to say neither are substitutes for each other.