A more thorough explanation:

Definition: Duplex querela refers to an appeal made by a clerk to the archbishop when the bishop delays or wrongfully refuses to do justice. It is also used to describe an appeal made to a person's immediate superior, such as when a bishop appeals to an archbishop. It is also known as double quarrel or double complaint.

Example 1: A clerk who has been wronged by their bishop may make a duplex querela to the archbishop, asking for justice to be done.

Example 2: If a bishop disagrees with a decision made by their superior, they may make a duplex querela to the archbishop, appealing the decision.

These examples illustrate how duplex querela is used in the context of ecclesiastical law, specifically in cases where justice has not been done or where there is a disagreement between two parties. It is a way for individuals to appeal to a higher authority for a fair resolution to their dispute.