3.6  DISPLAY USER MAP
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Deleting a mark or vertex of a line (Delete Vertex) 
With regard to the created user map, a vertex is deleted individually from a mark or line. 
 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  6.Delete Vertex    and press [ENTER] key.
2  Put the cursor on the mark or vertex of a line, and press [ENTER] key. 
The vertex of the selected mark or vertex of a line is deleted. 
All of the lines drawn by joining two points are deleted. 
To delete another mark or vertex of a line, repeat procedure 2. 
3    Press [ MENU] key. 
Menu will be closed. 
(Example) 
The vertex to be deleted