3/

The "describes" field would point to the thing being labelled.

The "attributedTo" field would point to the person or machine that create these label.

And the "attachment" field would be a list of labels.

The (top level) "icon" field would be an icon that would be shown next to the label in the user-interface (UI).

0

If you have a fediverse account, you can quote this note from your own instance. Search https://mastodon.social/users/reiver/statuses/113822893896346873 on your instance and quote it. (Note that quoting is not supported in Mastodon.)