Navigation
    Entering a destination
        Opening list "Last destinations"
        Opening the list of special destinations
        Marking the navigation destination on the map
    Using the address book
        Saving the navigation destinations in the address book
        Selecting a destination out of the address book
        Changing address entry
        Deleting an address book entry
    Starting route guidance
    Ending route guidance
    Calculating an alternative route
    Accessing other navigation functions
        Specifying route options for route guidance
        Displaying traffic jam warnings
        Switching announcements on and off
    Setting the map display to the maximum scale
    Choosing between map and arrow symbols
    Altering the map detail