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Which of the following statements is TRUE?

  1. The word "shall" indicates a recommendation.

  2. The word "should" indicates a mandatory requirement.

  3. The words "must" and "shall" indicate recommendations.

  4. The word "shall" indicates a mandatory requirement while "should" indicates a recommendation.

The correct answer is: The word "shall" indicates a mandatory requirement while "should" indicates a recommendation.

In legal and technical writing, specific terminology conveys different levels of obligation. The term "shall" is commonly understood to indicate a mandatory requirement, meaning that compliance is not optional. Conversely, "should" suggests a recommendation or best practice, giving guidance without imposing an obligation to adhere strictly to it. This clarifies that while "shall" enforces adherence to a requirement, "should" allows for some discretion based on circumstances. Recognizing these distinctions is crucial for professionals in fields governed by codes and standards, as it ensures compliance with regulations while allowing for flexibility in implementation when appropriate. Understanding this terminology aids technicians in accurately interpreting standards and applying them correctly in their work.