Hey @Klaas: Yes, you are right, that it is not clear in the instructions that you would have to replace the old front matter. Sorry about that. Hopefully now that Iāve managed to simplify and standardize the front matter format, there will be no more confusions like that for new users.
Regarding how to exclude a single file from numbering, the vault-wide settings are ignored for the file if the file has front matter with a ānumber headingsā key with some value. So, for example, you could put this on top of the file, and the file will not be automatically numbered:
---
number headings: none
---
Thereās currently no way to skip a whole folder, unfortunately.