Go to the navigation window (see image below).

Place your cursor in the field "Navigation tree" (see the first image below). When you place your cursor in the field "Navigation tree", you will get access to an icon called "Open" (see the second image below).

3. Click "Open" (see the first image below). When you do so, the navigation tree you are working with will open. When a navigation tree opens, so does its navigation tree card (see the second image below). Via navigation tree card you can both work with the navigation tree settings and remove a navigation tree from Pythagoras Web. For more information on how to work with the navigation tree settings, see section 5.6. For more information on how to remove a navigation tree from Pythagoras Web, see section 5.7.