Rules
ETIQUETTE On the Putting Green
On the putting green, players should not stand on another player's line of putt or, when he is making a stroke, cast a shadow over his line of putt.

REVIEW OF RULE 11--12 - 2 Identifying Ball
- The responsibility for playing the proper ball rests with the player. Each player should put an identification mark on his ball.
- If a player has reason to believe a ball at rest is his and it is necessary to lift the ball in order to identify it, he may lift the ball without penalty, in order to do so.
- Before lifting the ball, the player must announce his intention to his opponent in match play or his marker or a fellow competitor in stroke play and mark the position of the ball. He may then lift the ball and identity it, provided that he gives his opponent, marker or fellow-competitor an opportunity to observe the lifting and replacement. The ball must not be cleaned beyond the extent necessary for identification when lifted under Rule 12-2.
- If the ball is the player's ball and he fails to comply with all or any part of this procedure, or he lifts his ball in order to identify it when not necessary to do so, he incurs a penalty of one stroke.

Gunta Rolle and Irene Yablonsky on RULES