Feature Request #13176
Gedcom 7 added a “MIME” field for notes, mostly for officially supporting html code in notes.
https://gedcom.io/specifications/FamilySearchGEDCOMv7.html#MIME
This would advantageously replace the “HTML Code” note type, since pretty much all note types could contain html code, and could potentially be extended to markdown since it seems many gramps users would like to use it…