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Clearing marks or lines at a time(Clear by Type / Color) 
With regard to the created user map, marks or lines are cleared by type or by color at a time. 
 Procedures  1  Press [MENU] key. 
Select  8.Next    and press [ENTER] key.
Select  4.NAV Information    and press [ENTER] key.
Select  1.Edit User Map    and press [ENTER] key.
Select  7.Del by Type/Col    and press [ENTER] key.
Select the type of marks or lines to be deleted. 
To select all types, select    All . 
For example, to delete "red  ٤" marks, select  ٤ . 
2  Select the color of the marks or lines to be deleted. 
Select the color of marks or lines to be deleted. 
To select all colors, select    All . 
For example, to clear "red  ٤" marks, select    Red . 
After the items have been selected, Confirmation Window will appear. 
3  Press [ENTER] key. 
All selected marks or lines will be cleared at a time. 
4    Press [ MENU] key. 
Menu will be closed. 
Note:  If data is not copied on the flash memory card (CF card), the data is not be reloaded. 
The flash memory card is an option.