A more thorough explanation:

Definition: Pro re nata is a Latin phrase that means "in the light of what has arisen." It is used to describe situations that arise unexpectedly and require immediate attention.

For example, if there is an emergency meeting called to address a sudden crisis, it would be considered pro re nata. In legal terms, pro re nata can refer to rules or principles that are established on a case-by-case basis, rather than through general legislation.

According to legal scholar John Salmond, pro re nata principles allow for greater adaptability to individual cases, which is not possible with more rigid laws. This can be beneficial in situations where the circumstances are unique and require a flexible approach.

Overall, pro re nata is a term that is used to describe situations that require immediate attention and a flexible approach to problem-solving.