Sony nav-u Guide De Démarrage Rapide page 22

Navigation
Map tools
US
Touch "Options" to show the map tool bar.
 Press to show the main menu.
 Touch to toggle the map orientation (heading up/north up).
 During route guidance:
Press to repeat the last voice guidance.
In other cases:
Press to return to the current position display.
 Touch to show additional map options.
(E.g., "Save This Location, " "Quit Navigation, " etc.)
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Map tool bar