Editing
Editing tools
The bar under the toolbar. Buttons dim when the current selection can't use them.
| Tool | Behaviour | Needs |
|---|---|---|
| Copy / Paste | Copies selected nodes plus the edges between them; paste offsets and selects the copy | A selection |
| Duplicate | Copy and paste in one action | A selection |
| Delete | Removes the selection and every edge touching it | A selection |
| Group | Wraps the selection in a real container node; children move with it and are clipped to it | 2+ nodes |
| Ungroup | Dissolves the container and restores absolute positions | A group |
| Align left / centre / right | Aligns using measured node widths, not raw coordinates | 2+ nodes |
| Distribute horizontally | Even spacing between the outermost selected nodes | 3+ nodes |
| Zoom in / out / fit | Viewport controls; fit frames the whole diagram | — |
Groups are real
Grouping creates an actual container node rather than a visual hint, so children move with the group and stay inside it. Groups are excluded from simulation — they are containers, not services.