Athanor by arbastro
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How to use version history

Press Shift+H or choose File › Version history. It lists the steps of this session with Undo and Redo, and the automatic versions. Approve this version records a sign-off; named versions need you signed in.

Steps

  1. Press Shift+H, or choose Main menu › File › Version history.

  2. The panel lists every step of this session, newest at the bottom, with a thumbnail of the page. Undo and Redo step through them.

    Version history with Undo, Redo, a thumbnail, and the steps Opened and Insert Aspirin.Version history with Undo, Redo, a thumbnail, and the steps Opened and Insert Aspirin.

  3. Further down are the Automatic versions of the page, with their times.

Everything in the step list is this session only.

Sign-off

Approve this version records who signed off on the page as it is now. It is a record kept in the file with a fingerprint of the page, not a cryptographic signature: it proves what was approved, but anyone who can edit the file can remove it.

Drawing basicsHow to undo, redo and replay a drawingCtrl+Z undoes and Ctrl+Shift+Z (or Ctrl+Y) redoes. Version history (Shift+H) shows every edit as a picture you can go back to. View › Replay drawing plays the page back the way it was drawn.

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Last updated Nov 12, 2026