Regarding possible conflicts of interest,how are the rules written?

Question

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The rules regarding possible conflicts of interest are usually written clearly to ensure that there is no room for interpretation or confusion. Specific examples may also be included to provide further clarity. However, they are not written annually as conflicts of interest can arise at any time and need to be addressed as they occur. Writing the rules vaguely would not provide adequate guidance and could lead to ethical breaches.

Regarding Possible Conflicts of Interest,how Are the Rules Written