Furuno FCR-2107 Series Operator's Manual page 270

8. Manual Updates
The example below shows how to modify a line.
1) Activate Position Edit.
The example below shows how to set position for a point.
This method is also applicable to insert or append new points for existing chart features.
1) Activate Position Edit.
2) Insert a point with
left mouse button pushed.
8-10
2) Place cursor on point to edit.
3) Change lat and lon if necessary.
3) Keep left mouse button
pushed down to modify
a point.
Choose digit with cursor and
push thumbwheel and then spin
it change digit.