A pair of lines, from both the midfield line and each goal line, divides the field into three sections. From each team's point of view, the one nearest its own goal is its defensive area, then the midfield area, followed by the attack or offensive area. These trisecting lines are called "restraining lines." A right angle line is marked from each sideline connecting each endline to the nearer restraining line, creating the "restraining box." If an official deems that a team is "stalling," that is not moving with offensive purpose while controlling the ball, the possessing team must keep the ball within the offensive restraining box to avoid a loss-of-possession penalty.