Here you can create hyperlinks to any website you wish. These hyperlinks are displayed as buttons in the lower bar of the map.
Click on “add button” an then on the marked space below “title” to enter one. Then click on the “target”-column in the same line to mark it. Another click allows you to enter the URL.
In order to delete a button, the corresponding line has to be selected. You can do this by clicking on the small grey space on the left in the line which you want to delete. After that, press “remove button”.