Couldn’t find anything either in the spec for rel targets (https://www.w3.org/TR/html50/links.html#linkTypes) or in the micro format lists, to which you are allowed to contribute: http://microformats.org/wiki/existing-rel-values#HTML5_link_type_extensions
@arebee the goal is for these links to show up “for free” in any player that displays notes (HTML)
@arebee the goal is for these links to show up “for free” in any player that displays notes (HTML)