TomTom Navigator Navigator 2 Reference Manual page 4

Allows you to plan an alternative route to the same destination. A sub-
menu will pop up with the following options:
Alternative
Routes
Alternative
Roadblock
Avoid ***
Turns on the three-dimensional display of the map.
Turn 3D View
ON
Displays the map in colors that provide extra contrast in the dark.
Use Night
Colors
The FIND button pops up a menu that allows you to find a specific
location, and then do something with it such as displaying it on the map,
Find...
or setting it as your destination.
Causes the application to simulate that you are actually driving the
planned route. The demonstration will continue until you use the "STOP
Demonstrate
demonstration" menu option.
route
Allows you to choose another map (if you installed more than one map)
Switch map
Plans a new route to the same destination, attempting to
use as few roads as possible from the currently planned
route. You can ask for alternatives to alternatives.
Allows you to specify the next part of your route
(immediately ahead of you) as "blocked". A new route
Avoid
will be planned avoiding this part of the route.
One, two or three of these icons may be available. They
allow you to mark specific parts of your route (such as
the stretch on freeway E35) as blocked. An alternative
will be planned avoiding that stretch of freeway.
Note: The new route may still use another stretch of the
E35 to get you to your destination.
Discards all the road blocks, avoided areas and
alternatives you have introduced and calculates the
quickest route from your current location to your
Original
destination.
route