Which of the following best describes a precept issued by a court?

A precept issued by a court is best described as a directive commanding action by an official. This concept is rooted in the legal framework where such directives are used to instruct lower courts, officials, or other entities to perform a specific action in accordance with the law. It serves as an order that compels compliance, ensuring that the court's instructions are carried out as intended within the justice system.

In a legal context, the other options do not align with the definition of a precept. While a document outlining rights may refer to legal entitlements or protections for individuals, it does not encapsulate the directive nature of a precept. A notification to the defendant may relate to informing them of legal proceedings but does not capture the commanding nature of a precept. Lastly, a law established by legislation refers to statutory enactments, which are not specific directives issued by a court but rather broader legal frameworks established by legislative bodies. Thus, option B accurately reflects the purpose and function of a precept within the judicial system.