To enable Selection on your map, you only need to add a Toolbar control.
If the selected Theme has selectable layers, the ThemeSwitcher will detect them and enable the Selection tool on the Toolbar.
However, this means that you need to add the ThemeSwitcher control to the map before the Toolbar control. Be careful!
There are two modes of selection: Point and Line. Users can choose which of these two operations they wish to do using the submenu.