A more thorough explanation:

A greffier is a person who keeps records for a court. They are also known as a registrar.

• During the trial, the greffier took notes of everything that was said in court.
• The greffier is responsible for keeping all the court documents organized and up-to-date.

These examples show how a greffier is an important person in a court. They are responsible for keeping track of all the information and documents related to a case. Without a greffier, it would be difficult to keep track of everything that happens in court.