The Federal Rules of Civil Procedure
Pleadings and Motions
Pleadings Allowed; Form of Motions and Other Papers
(a) Pleadings. Only these pleadings are allowed:
(1) a complaint;
(2) an answer to a complaint;
(3) an answer to a counterclaim designated as a counterclaim;
(4) an answer to a crossclaim;
(5) a third-party complaint;
(6) an answer to a third-party complaint; and
(7) if the court orders one, a reply to an answer.
(b) Motions and Other Papers.
(1) In General. A request for a court order must be made by motion. The motion must:
(A) be in writing unless made during a hearing or trial;
(B) state with particularity the grounds for seeking the order; and
(C) state the relief sought.
(2) Form. The rules governing captions and other matters of form in pleadings apply to motions and other papers.