Can additional lines not approved in Law 1 be marked on the field of play?
No. Only lines approved in Law 1 can be marked on the field of play. 8. When a corner kick is about to be taken, can the players of the defending team be closer than the marks painted off the field of play 9.15 m. (10 yds) from the corner arc and at right angles to the touch line and the goal line? These marks are optional and are used to assist the referee. All players of the defending team must be at least 9.15 meters (10 yards) from the ball until it is in play. 9.
