Configure the HTML-editor?

Hi. Is it possible to edit the functionality HTML-editor?
The case is that a customer want to limit what features to be allowed in the editor.

@MathisFenne: In XP? Check out the release notes for the latest version:

The title “Boosted HTML Editor” seems to be exactly what you are looking for. Spec is here:

You can choose to either include only certain features or exclude certain features.