include
The "buoys, beacons, structures" view group setting (true/false). Per IHO S-52 Annex A, controls viewing group layer 3.1, which includes viewing groups 21010, 21020, 22200 - 22240, 27000-27050, 27080, 27200 – 27230, 27030, and 27060.
Since
200.1.0