What do the 'should' directives in standards signify?

The 'should' directives in standards are used to indicate best practices. This means that while the actions recommended by these directives are not mandatory, they are encouraged based on established principles, research, and expert consensus. Implementing these practices can lead to more effective and efficient outcomes, but adherence is not enforced by a regulatory requirement.

In contrast, directives that specify mandatory actions convey requirements that must be followed, whereas legal obligations are binding laws that must be followed under penalty of law. Prohibitions explicitly state actions that should not be taken, which is different from the advisory nature of 'should' directives. By understanding that 'should' implies a recommendation, one can appreciate its role in guiding professionals towards optimal practices without making compliance compulsory.