A more thorough explanation:

A writ of coram vobis is a legal term that comes from the Latin phrase "before you." It refers to a type of writ of error that is used to review a court's judgment. There are two main types of writs of coram vobis:

1. A writ of error directed to a court other than the King's Bench, especially the Court of Common Pleas, to review its judgment. This writ is used to correct certain errors in the process of the court, such as errors committed by the clerks or errors related to matters of fact.
2. A writ of error sent by an appellate court to a trial court to review the trial court's judgment based on an error of fact.

For example, if a person believes that the Court of Common Pleas made an error in their case, they may file a writ of coram vobis to have the court's judgment reviewed. Similarly, if an appellate court believes that a trial court made an error of fact in a case, they may send a writ of coram vobis to the trial court to review the judgment.