A more thorough explanation:

REGISTRUM JUDICALE

Registrum judicale is a Latin term that refers to the register of judicial writs.

It is abbreviated as reg. jud.

One example of a registrum judicale is a record of court orders and decisions.

Another example is a list of legal documents filed in a court case.

These examples illustrate how a registrum judicale is a record-keeping system used in the legal system to keep track of important documents and decisions related to court cases.