How do History and undo work?

Updated October 23, 2026

History is a record of every change to a universe: who made it, when, and where it came from. Editors and the owner can Undo any entry in it. Undo is careful: it only reverses what's still exactly as that change left it, so a co-author's later edits are never overwritten.

What History records

Open History at the bottom of the sidebar. Each entry shows a summary, who made it, and when. Expand an entry to see each item it changed, with what changed.

Every change carries a source:

A save or an import is one entry, however many items it touches. Quick edits in a row to the same entry by the same person are merged into one. Membership and publishing changes are logged too.

Filter and export

• Use Everyone to pick one person, and All sources to pick one source, such as "AI connector".
• An entry's page shows its own Recent changes.
• Export CSV downloads the log as a spreadsheet with time, person, source, action, item and detail.

Undo a change

1. Find the entry in History (or in Recent changes on an entry's page).
2. Choose Undo.
3. Confirm.

What happens next:

• Items nobody has touched since are put back the way they were.
• Items that have been edited again since are left as they are. A message tells you how many were skipped.
• If everything has changed since, nothing is undone.
• Undo won't delete an entry that others have since attached facts to.

The undo itself is a new entry in History, and the original is shown struck through and marked "undone".

What can't be undone

• A backup restore. Restore an earlier backup instead.
• Deleting a universe. Download a backup first from Settings → Export & backup.
• Chapter text. History notes the change and word count, but doesn't keep old text.

History is kept for two years, up to 50,000 entries.