A replacement document for all types of correspondence containing Chairman of the Joint Chiefs of Staff policy and guidance that does not involve the employment of forces. An instruction is of indefinite duration and is applicable to external agencies, or both the Joint Staff and external agencies. It remains in effect until superseded, rescinded, or otherwise canceled. Chairman of the Joint Chiefs of Staff instructions, unlike joint publications, will not contain joint doctrine. Terminology used in these publications will be consistent with JP 1-02.