include Magnetic Variation
The "magnetic variation" view group setting (true/false). Per IHO S-52 Annex A, controls viewing group layer 14, which includes viewing group 31080.
Since
200.1.0
The "magnetic variation" view group setting (true/false). Per IHO S-52 Annex A, controls viewing group layer 14, which includes viewing group 31080.
200.1.0