The following actions can be performed on the selected nodes:
| Keys | Action |
|---|---|
| Up | Move selection up |
| Down | Move selection down |
| Right | Expand element |
| Left | Collapse element |
| F2 | Edit element |
| Ctrl+C | Copy element |
| Ctrl+X | Cut element |
| Ctrl+V | Paste element |
| Del | Delete element |
| Ctrl+Up | Move element up |
| Ctrl+Down | Move element down |
| Click | Select an element and remember it as the current element. |
| Ctrl+Click | Toggle the selection status of the clicked element and add/remove additional elements with further clicks. |
| Shift+Click | Select the span from the currently-selected element to a newly selected element. |
| Shift+Up | Select element above. |
| Shift+Down | Select element below. |
| Enter | Assign element (only in assignment tree) |