Is there a way to scale up the fonts for the UI of the whole app? On a 27'' screen it just begs for it. Is is possible to quickly switch a cell to a code format with a specified language? (triple backquotes? like ```python?)
For cells, you can Opt+Cmd+2 to convert to a code cell, then Opt+Cmd+/ to bring up the list of languages and then type ahead. That's about as close as it gets. You can also set the default language for new code cells in preferences.