A more thorough explanation:

A narrator is a person who prepares pleadings or arguments in a legal case. In the past, a serjeant-at-law was also known as a serviens narrator. The term "narrator" comes from Law Latin and was also used in French as "contour."

• A lawyer who writes a legal brief for a court case is a narrator.
• A person who prepares a written argument for a dispute resolution process is also a narrator.

These examples illustrate how a narrator is someone who prepares a written argument or pleading for a legal case or dispute resolution process. They are responsible for presenting the facts and arguments in a clear and persuasive manner to support their client's position.