What does the term "Must" indicate in the context of the Rules of Golf?

In the context of the Rules of Golf, the term "Must" indicates a mandatory requirement that players are obligated to adhere to. This means that when a rule stipulates that a player "must" do something, failure to comply with that directive can result in penalties. The use of "must" enforces strict compliance and leaves no room for discretion or personal interpretation, ensuring that all players understand the expectations clearly and consistently.

In contrast, terms like "recommended" or "optional" imply a level of flexibility that does not apply when "must" is used. Additionally, "subject to change" reflects a dynamic nature of rules that may be updated but does not pertain to the definitive obligations players face under current regulations. Therefore, understanding that "must" entails all players are required to follow specific guidelines is crucial for both compliance and the integrity of the game.