A judicial summons is addressed to a defendant in a legal proceeding. Typically, the summons will announce to the person to whom it is directed that a legal proceeding has been started against that person, and that a file has been started in the court records. The summons announces a date by which the defendant(s) must either appear in court, or respond in writing to the court or the opposing party or parties. The summons is the descendant of the writ of the common law.