Touch enter bar or the triangle to edit your start point by one of the following methods: entering an address, using My Location, selecting a start point on a map, selecting a starred item, selecting an address from your contacts or using search history.
Do likewise for your end point.
To reverse directions, touch Menu icon 
and touch Reverse Start & End.
Then select a transport mode: driving by car, using public transportation, or walking directions.
Finally touch GET DIRECTIONS.
A couple of suggested routes will appear in a list. Touch any routes to
view their respective detailed directions.
To get reverse directions for a route you’ve already made, simply open
that route’s directions window and touch Menu icon 
and Reverse. No need to enter your start point and end point again.
9.4.2Preview suggested routes and decide on a route
more preferable or feasible to you
You can preview each turn in your route in Navigation, Satellite, and other views.
Touch a left or right arrow to preview the next or previous leg of your route.
You can view
or MAP VIEW to return to previous view.
When selecting a more preferable or feasible route, distance and time will be the two most important factors for your evaluation. Distance and estimated time will be displayed at the top of the directions screen.
9.4.3Search for locations along your route
Please refer to ―9.2 Search for a location‖ for detailed information.
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