farcaller on Nostr: will have all of them but tl;dr is that there's an ID to each note that defines the ...

https://zettelkasten.de/folgezettel/ will have all of them but tl;dr is that there's an ID to each note that defines the relationship between siblings (notes related by overarching subject) and children (notes expanding directly on the subject of a given note). You can mock that with e.g. parent relationships but I always found those a bit clunky.