Wood Fence Support is a building part in ATLAS.
Fence supports are required for building wall sections on the ground without floors. (Normally you need a floor section to put a wall on.) Using fence supports with other wall sections allows you to build animal pens, perimeter walls and floorless huts. You do not need a wall support for every section of wall, but just the corners or ends. Fence supports also allow you to place walls at angles other than 90 degrees. Use the T & Q hotkeys to adjust their positioning.