What is the meaning of a 'summons to appear'?

== == * A "summons to appear" is a letter to inform you are being sued, and to appear in court. It is commonly filed with the complaint letting you know what you are being sued for. Whoever receives the summons needs to file their answers with the court stating if they agree to, or deny, the allegations, as well as appear at the place and time as stated on the summons. By definition a traffic ticket is an example of a common form of summons. Beside testifying in a criminal case, summons are issued in any court proceeding that requires testimony or deposition of the named party.