A more thorough explanation:

Definition: Double quarrel, also known as duplex querela, refers to an appeal made by a clerk to the archbishop when the bishop delays or wrongfully refuses to provide justice. It can also refer to an appeal made by a person's immediate superior, such as a bishop appealing to an archbishop.

Example 1: A clerk in a church has been wrongfully accused of theft by their bishop. The bishop refuses to listen to the clerk's defense and delays providing justice. In this case, the clerk can make a double quarrel by appealing to the archbishop for justice.

Example 2: A bishop disagrees with a decision made by their immediate superior, the archbishop. The bishop can make a double quarrel by appealing to a higher authority, such as the pope.

These examples illustrate how a double quarrel can be used as a means of seeking justice when a person's immediate superior fails to provide it. It allows for a higher authority to intervene and make a decision in the matter.