Rule 8. Advice; Indicating Line of Play
Definition
"Advice'' is any counsel or suggestion which could influence a player in determining his play, the choice of a club or the method of making a stroke.
Information on the Rules or on matters of public information, such as the position of hazards or the flagstick on the putting green, is not advice.
The "line of play'' is the direction which the player wishes his ball to take after a stroke, plus a reasonable distance on either side of the intended direction. The line of play extends vertically upwards from the ground, but does not extend beyond the hole.
8-1. Advice
During a stipulated round, a player shall not give advice to anyone in the competition except his partner and may ask for advice only from his partner or either of their caddies.
8-2. Indicating Line of Play
a. Other Than On Putting Green
Except on the putting green, a player may have the line of play indicated to him by anyone, but no one shall be positioned by the player on or close to the line or an extension of the line beyond the hole while the stroke is being played. Any mark placed during the play of a hole by the player or with his knowledge to indicate the line shall be removed before the stroke is played.
Exception:
Flagstick attended or held up (Rule 17-1).
b. On the Putting Green
When the player's ball is on the putting green, the player, his partner or either of their caddies may, before but not during the stroke, point out a line for putting, but in so doing the putting green shall not be touched. No mark shall be placed anywhere to indicate a line for putting.
Penalty for Breach of Rule:
Match play - Loss of hole; Stroke play - Two strokes.