Plus-combination of boundaries

Join the areas of two boundaries to one common boundary area

To combine two boundaries with the plus tool

1. Click Plus-combination.
2. Click the first boundary to be combined.
3. Click the second boundary to be combined.

   Hint: When using the plus-combination the sequence of the boundaries to be selected has no influence.

4. Combine further boundaries with the plus-combination (back to 2.) or quit the tool with ESC.