LG LN740 - Manual (Page 60)

Setup
60
Select Map
This feature lets you change the currently selected
map to another map saved on your SD memory card.
If you want to store additional maps on your memory
card.
You can tap the “Select Map” button to display the
maps saved on your built-in memory.
The Select Map screen displays map details and
version numbers. The map currently used appears at
the top of the list.
Lets you refresh the screen when a new memory
card is inserted into the device.
Lets you permanently remove a selected map.
You cannot delete the current map.
Select Lets you designate a selected map as the
current map.
Initialize
Clear Memory:
You can delete all listing from the memory.
Factory Settings:
You can set all the function to their factory settings.