I think adding a toggle to run or not run a cell would be a trivial change, something like adding a property to the cell (https://raw.githubusercontent.com/jupy

I think adding a toggle to run or not run a cell would be a trivial change, something like adding a property to the cell (https://raw.githubusercontent.com/jupyter/notebook/master/notebook/static/notebook/js/notebook.js https://raw.githubusercontent.com/jupyter/notebook/master/no...) and checking whether that is set or not before running the contents.