control point

The control points must be visited in the right order.

His control point was at the far end of the great arena.

The team who has all of the control points covered first, wins.

The shape of the surface is determined by control points.

The continued existence of national control points is beyond doubt.

So there's got to be some sort of ongoing monitoring, even if we haven't found a central control point.

"I don't believe it," the man in the back said, once they were a hundred meters away from the control point.

The course had a length of 8.1 kilometers and ten control points.

The site is an active control point for the global positioning system.

The first checkpoints were set up in 2006; since 2007 the current system of 222 control points has been available.