Sec. 3731. Appeal by United States. 3732. Taking of appeal; notice; time—Rule. 3733. Assignment of errors—Rule. 3734. Bill of exceptions abolished—Rule. 3735. Bail on appeal or certiorari—Rule. 3736. Certiorari—Rule. 3737. Record—Rule. 3738. Docketing appeal and record—Rule. 3739. Supervision—Rule. 3740. Argument—Rule. 3741. Harmless error and plain error—Rule. 3742. Review of a sentence.