A more thorough explanation:

PER RESCRIPTUM PRINCIPIS

Per rescriptum principis is a Latin term used in Roman law. It refers to an imperial written reply to a petition.

For example, if a citizen of the Roman Empire wanted to request a favor or clarification from the emperor, they could submit a petition. If the emperor responded in writing, his response would be considered a per rescriptum principis.

Another example could be a legal dispute between two parties. If one of the parties requested the emperor's intervention and the emperor responded in writing, his response would also be considered a per rescriptum principis.

The examples illustrate how per rescriptum principis was used in Roman law. It was a way for the emperor to communicate his decisions and opinions in writing, especially in response to petitions or requests for intervention. This written response was considered legally binding and could have a significant impact on the outcome of a legal dispute or the granting of a favor.