Saving and Versions
Every diagram keeps a numbered version history: each save - whether you clicked the button or auto save did it for you - records a new version.
Auto Save
Auto save is the checkbox in the editor toolbar, and it is on by default. A moment after you stop editing, the diagram saves itself and the title bar shows the result - for example "Saved v4 at 07:14".
Untick the checkbox if you prefer to save manually - for example while experimenting with a change you may not keep.
Manual Save
Click Save draft in the toolbar to save immediately. The button shows a spinner while the save is in flight.
How Versions Work
- A new diagram starts at v1.
- Every save writes the next version: v2, v3, and so on.
- The current version is shown next to the diagram title in the editor and in the Version column of the Diagrams list.
- An asterisk (*) after the title means there are changes that have not been saved yet.

What This Means in Practice
- You never lose a previous state to an accidental save - earlier versions remain recorded.
- The Diagrams list and the editor always open the latest version.
- If several saves happen in quick succession (for example with auto save on while you edit actively), expect the version number to advance more than once - that's normal.