The idea
Automatic version snapshots of your document at meaningful intervals — every hour, or when significant changes are detected. Browse a timeline of previous versions, preview any snapshot side-by-side with the current version, and restore with one click. No manual saving of "v2_final_FINAL" copies.
Why it matters
Autosave is great until you accidentally delete a paragraph and don't notice until the next day. Version history is the safety net that makes autosave feel safe. It's also useful for tracking how your argument evolved — sometimes you want to go back and see what you wrote yesterday before you restructured the introduction. For collaborative documents, it's even more important: you can see what changed and when.
Availability
Shipped — version history is available on the Chair plan. Folio keeps periodic snapshots of your document so you can browse the timeline and restore any earlier version. On every plan, a local draft is also kept in your browser as a crash safety net, so autosave is never your only line of defence.