Maintenance and upkeep improvements • Update links and fix check-release #6310 (@blink1073) • Update 6.4.x branch with some missing commits #6308 (@kycutler) 5.1.2 Other merged PRs • Specify minimum version

notebook, see the collection of examples [https://nbviewer.jupyter.org/github/jupyter/notebook/tree/6.4.x/docs/source/examples/Notebook/]. Code cells A code cell allows you to edit and write new code, See also Working with Markdown Cells [https://nbviewer.jupyter.org/github/jupyter/notebook/blob/6.4.x/docs/source/examples/Notebook/Working%20 With%20Markdown%20Cells.ipynb] example notebook Raw cells ipynb] example notebook Notebook Basics [https://nbviewer.jupyter.org/github/jupyter/notebook/blob/6.4.x/docs/source/examples/Notebook/Notebook%2 0Basics.ipynb] example notebook Keyboard shortcuts All