709 Out of bounds area
Geometry: area.
Definition
An out of bounds area. A bounding line may be drawn if there is no natural boundary as follows: a solid line indicates that the boundary is marked continuously in the terrain, a dashed line indicates intermittent marking in terrain, no line indicates no marking in terrain.
The symbol is orientated to north.
Parameters
Minimum width: 2 mm (footprint 30 m).
Minimum area: 4 mm2.
Colour: upper purple (over black).