How does versioning work?

Documents carry a version history. Each update creates a new revision rather than overwriting history, and any earlier revision can be read back by number.

This is what keeps an attribution meaningful over time: an answer can point at the version of a document that was live when it was given, not just at the document as it reads today.

Call it

GET/org/content/{id}/versionsOpen in API reference →Every revision of a document.

POST/org/content/versions/{versionId}/restoreOpen in API reference →Put an old one back.