| | 9 | You can select two or more closed ways. |
| | 10 | If one area is surrounded by the other(s) it will automatically create a multipolygon. |
| | 11 | If the areas to join have different tags, a conflict dialog will show up. You need to choose there which value you want to use for the joined area. The options are: |
| | 12 | |
| | 13 | * all single values of the different areas |
| | 14 | * '''none''' - the key will be removed |
| | 15 | * '''all''' - all values are used for a key, seperated by a semicolon |
| | 16 | |
| | 17 | If the key is `capacity=*` or `capacity:*=*` there is one more option: |
| | 18 | * '''sum''' - summs all numerical values of the selected areas |
| | 19 | |
