text: Chapter 17
  Obstacle restricted areas is a command and control measure used to limit the type or number of obstacles
  within an area (JP 3-15). The commander with emplacement authority uses obstacle restricted areas to restrict
  obstacle placement. The graphic for obstacle restricted areas depicts the impacted area, the unit imposing the
  restriction, and the restrictions in effect. (See ATP 3-90.8/MCTP 3-34B for more information on obstacle
  control measures.)
  Figure 17-1. Obstacle control measures and intent symbols