JRC JMA-3300 Series Instruction Manual page 98

Chapter 2 OPERATIONS
2.7 SOFT KEY OPERATION
2 Press the cursor keys to move the cursor to the first point (setting of the start
latitude and longitude), then press the [ENT] key.
3 Press the cursor keys to move the cursor to the second point (setting of the
end latitude), then press the [ENT] key.
4 Press the cursor keys to move the cursor to the third point (setting of the end
latitude), then press the [ENT] key.
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