Adding to the browser context menu has issues:
* Browser extension: Obviously, we can add to the browser context
menu using a WebExtension (and similar extensions for other browsers).
The primary disadvantage I see is that setting it up such that users
need to install an add-on to get the full functionality of editing MDN
is not usually a good a user experience choice.
* In page HTML: An in-page solution would only be supported by
Firefox, as adding to the browser context menu with