JRC JMA-5204 Instruction Manual page 179

3.8 DISPLAY NAVIGATION INFORMATION (NEW INFORMATION DISPLAY)
4 Deleting a continuous line or mark (Delete)
Procedure 1 Press [4] key while the Edit User Map
Menu is open.
The navigation information deletion mode will
be activated.
field at software button
right corner of the radar display described in
Section 2.3.3.
2 Use the trackball to move the pointer to
the vertex in a line or the mark to be
deleted, and press [ENT] key.
The selected line or mark will be deleted.
Note: A line drawn by joining two points is all
3 To delete another line or mark, repeat step 2.
4 Press [0] key when finishing the deletion of lines and marks.
The CURSOR
operation mode, terminating the navigation information deletion mode.
(Example) Deletion of a vertex from a line
Delete will appear in the CURSOR mode
located at the top
deleted.
mode at the upper right of the radar display will change to the general
3 90
3