how can I limit the levels of headings in blocks? I want the user to use headlines <h3> to <h6> only. I found the defaults here but don‘t understand how to change them.
Note that the solution proposed does not work for headings in the writer field. For that, there’s a pending feature request here in Nolt. If you’d like to see first-class support for this in the writer field, be sure to go there and upvote it!