Docs on pragmatics

[dahlia]

While Fedify provides a vocabulary API, it does not provide detailed docs on how to utilize those vocabularies. However, ActivityPub implementations like Mastodon and Misskey already have de facto norms for how to use them, which you should follow to get the desired results.

For example, you need to know which properties on a Person object should be populated with which values to display an avatar or header image, which property represents a date joined, and so on.

We need to have a dedicated reference for this kind of usage of vocabulary.