I suspect I might be able to solve this with a custom viewer, but I’m not quite sure where to start. Viewers like clerk/html and clerk/md change the presentation of the result, but not the code.

Reading https://book.clerk.vision/#viewers now, perhaps I can use a :transform-fn.

Was just about to suggest you have a look at https://book.clerk.vision/#presentation and https://book.clerk.vision/#transform

to my knowledge that’s one thing we still cannot do in the transform-fn, but it’s been requested in the past

I’ve been a bit away from clerk development recently though

Oops, I actually misread your question 🙈 Ignore what I said…

I tried a bit more, and could only confirm what Andrea said: :transform-fn can’t change visibility. So form metadata it is!

I think we want to allow that at some point