This section is from the book "How To Play Golf", by H. J. Whigham. Also available from Amazon: How to play golf.
It may be useful to point out here to onlookers in the game that they also have duties to perform. If they care to follow a match they are bound in all courtesy to study the wishes of the players. The most common fault which may be found is in the position which is nearly always assumed by ignorant bystanders when a player is making a stroke. They naturally stand behind the ball in the direct line of flight, which is the one place they ought to avoid. They should either stand behind the player's back where he cannot see them at all, or right in front of him, so that they do not catch his eye as he swings backward. And above all, they should not move or speak until the shot is played. There is ample time for conversation between shots without disturbing the player just as he is about to hit the ball. It would be most beneficial if a few suggestions of this nature were incorporated in the rules upon the etiquette of golf, and especially if a diagram were made showing exactly where the onlooker should stand when a stroke is being played.
 
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