Selection
Basic selection
| Action | Input |
|---|---|
| Select | Click on geometry |
| Multi-select | Ctrl+Click |
| Rectangle select | Click and drag on empty canvas |
| Select all | Ctrl+A |
Selection uses an R-tree spatial index for efficient hit testing, so selecting and range-querying stays fast even on large datasets.
Hover highlighting
Geometry under the cursor is highlighted before you click, giving visual feedback about what a click will select.
Selection sets
Save the current selection as a named set and restore it later — useful for repeatedly working with the same group of geometry (e.g. all boundary points, or all geometry on a particular layer).
Selection history
Navigate back and forward through previous selections, similar to browser history.
Select Similar
Filter and select geometry by type, layer, code, name, position, or length — useful for bulk operations like “select all points with code BNDRY” or “all lines on this layer.”
Context menus
Right-click on geometry or empty canvas for context-sensitive actions.