A more thorough explanation:

Definition: De natura brevium is a Latin term that means "concerning the nature of writs." It was commonly used as a title for textbooks on English medieval law.

Example: In medieval England, writs were legal documents that were used to initiate a lawsuit or to compel someone to appear in court. De natura brevium texts would explain the different types of writs and their purposes.

Explanation: The example illustrates how de natura brevium texts were used to educate people about the different types of writs that were used in medieval England. By understanding the nature of these legal documents, people could better navigate the legal system and protect their rights.