Cadillac XLR-V 2006 Owner's Manual page 274

North Up, Change to North Up: These commands will
cause the system to display the North Up heading
when on the map screen if the map scale is set
to 2 miles (4 km) or less.
Map Direction, Change Map Direction: These
commands will cause the system to change the vehicle's
direction from North Up to Heading Up or Heading Up
to North Up on the map screen if the map scale is set to
2 miles (4 km) or less.
Mark, Mark This Point: These commands will cause
the system to mark the location as a memory point while
on the map screen.
Destination Commands
Home, Go Home: These commands will cause the
system to enter the Home destination, if one is set.
Go To Starting Point, Previous Starting Point:
These commands will cause the system to enter the
last available starting point as a destination.
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Guidance Commands
Repeat Guidance, Repeat Voice: These commands
will cause the system to repeat the last available
voice prompt guidance command if a destination has
been set.
Louder: This command will cause the system to
increase the volume of the navigation voice prompts if a
destination has been set.
Softer: This command will cause the system to
decrease the volume of the navigation voice prompts if
a destination has been set.
Voice Guidance Off: This command will cause the
system to turn off the navigation voice prompts if
a destination has been set.
Voice Guidance On: This command will cause the
system to turn on the navigation voice prompts if
a destination has been set.
Open Guidance, Open Guidance Screen, Open
Guide, Open Guide Screen: These commands will
cause the system to open the Guidance Appearance
menu if a destination has been set.