AREA8
Anchor Points: This symbol requires four anchor points. Points 1 and 2 define the endpoints of the straight line on the back side of the symbol. Points 3 and 4 define the tips of the arrowheads.
Size/Shape: Points 1 and 2 determine the length of the straight line on the back side of the symbol. The rear of the arrows should connect to points 1 and 2.
Orientation: Orientation is determined by the anchor points. The back side of the symbol encompasses the firing position, while the arrowheads typically indicate the left and right limits of coverage that the firing position is meant to support.