History
Every version of a document, who added it and how, and a passage-by-passage comparison that shows which canon to re-check.
Where Reader → History, or Library → a row’s menu → History

What you see
- VersionsEach version with how it arrived (uploaded, written in CanonTracker, saved from a research note), who, when, its passage count and sha256. Badges mark the Latest version and the Older side and Newer side of the comparison.
- Version pickers and layoutPick the older and newer version, and read the comparison Inline or Side by side.
- SummaryHow many passages changed, were added or removed, and how many are unchanged, plus how many canon citations to re-check.
- PassagesEach passage marked Changed, Added or Removed, with the words that changed. Runs of unchanged passages fold into one row; click it to read them.
- Canon to re-checkUnder a passage, every canon fact that cites it: Evidence outdated when its quote is gone, Quote unchanged when it still reads the same.
Compare two versions
- Press the compare button on a version to compare it with the one before.
- Or pick any older and newer version at the top.
- Switch between Inline and Side by side.
- Read the badges under each changed passage to see which canon it touches.
Act on canon that may no longer hold
- Find a fact marked Evidence outdated.
- Use the buttons beside it to see the passage in the older and newer version.
- Press Propose a change if the fact no longer holds, and see its impact before it reaches a build.
- Use All canon to re-check to confirm or keep citations across the project.
Versions never change
A saved version is never edited. A new upload with the same file name, or a save from Edit, adds the next version, and canon that cites an older one is flagged to re-check. See Versions and re-check.
Who can do what
- Viewer
- See every version and compare them.
- Editor, admin, owner
- Also propose a change for a fact whose evidence changed.
Roles are per studio. Roles and permissions has the full list.