| | 11 | 1. ''Enable mode, you will need to select two points for every area (make sure you are editing areas, not [#Usageonways on ways])'' |
| | 12 | 2. ''Use left mouse click to select point (icon: standard icon add node will appear); use left mouse click to deselect a point (icon with cross will indicate selected point)'' |
| | 13 | 3. ''After all 4 points selected, you can pick one of 4 parts as ''source geometry'' to move. Hover mouse over part and you will (cursor: move with 4 arrows);'' |
| | 14 | 4. ''After you started to drag ''source geometry'', you have one of two options in target geometry. Your ''source geometry'' will change it's shape to a ''target geometry'' shape after mouse hover and icon of a shortcut will be displayed.'' |
| | 15 | 5. ''Contours will be merged. But if ''source geometry'' had only one segment left, it will be completely collaplsed'' |
| | 16 | |
| | 17 | Regular usage on the left and complete collapse to geometry on the right: |
| | 18 | |
