Collaborative Editing
Relay editor changes between instances with getSharedStore, seed a joining editor from runtimeValue, and show each collaborator's cursor, focus, selection, and drag box.
Remote Storage
Replicate a live editor into a headless store off the main thread, and serialize the document for storage.
Schema
The .erd.json document format — the storage form a file holds and the runtime value an editor holds, the TypeScript types, the constants behind each numeric field, and the published JSON Schema.