JRC JMR-611 Instruction Manual page 94

Deleting a Mark or Vertex of a Line (Delete Vertex)
A vertex is deleted individually from a mark or line for the created user map.
Procedures 1
2 Put the cursor on the mark or vertex of a line, and press [ENTER]
3 Press [ MENU] key.
(Example)
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.
key.
The vertex of the selected mark or vertex of a line is deleted.
All the lines drawn by joining two points are deleted.
To delete another mark or vertex of a line, repeat procedure 2.
Menu will be closed.
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