Types describing relationships between events.
- An annotation for an event.
- Bundled aggregations of related child events of a message-like event.
- A bundled reference.
- Bundled aggregations of related child events of a state event.
- A bundled thread.
- Information about the event a rich reply is replying to.
- A reference to another event.
- A chunk of references.
- The content of a replacement relation.
- The content of a thread relation.
- Relation types as defined in