Jupyter notebook: split screen vertically (i.e. add cell horizontally)

Question

Is it possible to add a cell on the side of another cell, splitting the screen vertically? This seems very useful when comparing two lists of things.

I don't see this options supported out of the box, so I am guessing it would require some extra js?

Answer 1

This is now possible in JupyterLab. See this example:

...there is a menu item to create a new side-by-side view of that same notebook that will remain synchronized with the other view:

Note that JupyterLab will eventually replace Jupyter Notebook. See this answer.

Answer 2

You can right-click a file tab, and select, "New View for Notebook."