I can see that it is possible to remove marks (underline, strike, code) and heading levels from the Writer in a page Blueprint.
Is it possible to do this once – to change the Writer across the site?
Define once, reuse everywhere: Reusing & extending blueprints | Kirby CMS
Wow, thank you! Not only is it possible, you know where the docs are, and I’m guessing you’re working on a weekend!