4 Suspensions of the PES
4-1 Data Processing Materials (39 CFR 320.2)
4-1.1 Standards
4-1.2 Conveyed Material
4-1.3 Definitions of Terms
4-2 Letters of College and University Organizations (39 CFR 320.4)
4-3 Certain International Ocean Carrier-related Documents (39 CFR 320.5)
4-4 Extremely Urgent Letters (39 CFR 320.6)
4-4.1 Standards
4-4.2 Time Limits for Delivery — “Loss-of-Value Test”
4-4.3 Postage Value — “Cost Test”
4-4.4 Required Markings
4-4.5 Examples
4-5 Advertisements With Parcels or Periodicals (39 CFR 320.7)
4-6 International Remailing (39 CFR 320.8)
4-6.1 Standards
4-6.2 Carriage Out of Mails to U.S. Residents
4-6.3 Revocation of Suspension
