Document Tabs
Work with multiple diagrams simultaneously using document tabs.
Multi-Tab Interface
Diagrammix3 supports tabbed documents, allowing you to:
- Open multiple diagrams in one window
- Quickly switch between documents
- Compare diagrams side-by-side

Creating New Tabs
New Document in Tab
Create a new blank document in a tab:
- File → New Tab (Cmd+T)
The new document opens in a new tab within the current window.
Open in Tab
Open an existing document in a new tab:
- File → Open... while holding Option opens in a new tab
- Or double-click a file in Finder while a document is open
Tab Navigation
Switching Tabs
- Click a tab to switch to it
- Ctrl+Tab: Next tab
- Ctrl+Shift+Tab: Previous tab
- Cmd+1-9: Jump to specific tab by number
Reordering Tabs
Drag tabs left or right to reorder them within the window.
Moving Tabs Between Windows
- Drag a tab out of the tab bar
- Drop it to create a new window
- Or drag onto another window's tab bar to merge
Tab Management
Closing Tabs
- Click the X on a tab to close it
- Cmd+W: Close current tab
- Option+click X: Close all other tabs
Renaming Documents
The tab shows the document name. To rename:
- File → Rename... or click the document name in the title bar
- Enter the new name
- Press Return
Unsaved documents show "Untitled" until saved.
Tab States
Indicators
| Indicator | Meaning |
|---|---|
| Dot before name | Unsaved changes |
| Dimmed appearance | Inactive tab |
| Bold text | Active tab |
Restoring Tabs
When reopening Diagrammix3:
- Previously open tabs are restored automatically (if enabled in preferences)
- Tab order is preserved
- Scroll position and zoom may be restored
Working with Multiple Tabs
Copy Between Tabs
- Select objects in one tab
- Copy (Cmd+C)
- Switch to another tab
- Paste (Cmd+V)
Drag Between Tabs
- Select objects in one tab
- Drag toward the tab bar
- Hover over the destination tab (it will activate)
- Drop onto the canvas
Compare Diagrams
For detailed comparison:
- Move one tab to a new window (drag tab out)
- Arrange windows side-by-side
- Compare and edit both documents
Tips
- Use tabs for related work: Keep project diagrams in the same window
- Limit open tabs: Too many tabs can be confusing
- Save frequently: The dot indicator reminds you of unsaved changes
- Keyboard navigation: Ctrl+Tab is faster than clicking