How to save, undo, and redo
Save a diagram
Section titled “Save a diagram”Diagram changes are not saved automatically. You must explicitly save:
- Press Ctrl+S / Cmd+S
- Or use File > Save from the menu
Unsaved changes are indicated by a marker in the diagram tab title. If you try to close a diagram or switch projects with unsaved changes, you’ll be prompted to save or discard.
Model changes made outside diagrams (renaming elements in the Explorer, editing properties) are saved automatically.
Press Ctrl+Z / Cmd+Z to undo the last change on the current diagram.
The undo stack covers layout changes (moving, resizing, adding, removing elements on the Canvas), edge routing, and formatting. You can undo back to the last saved state.
Press Ctrl+Shift+Z / Cmd+Shift+Z (or Ctrl+Y on Windows/Linux) to redo an undone change.
- Undo/redo is per-diagram — each open diagram has its own undo stack
- Saving clears the ability to undo past the save point
- Model-level changes (deleting an element from the Explorer) are not undoable via the diagram undo stack — they take effect immediately across all diagrams