classified marking guide (dec 2010) - the Security Training Portal.

Introduction 2Reminders 2SECTION 1 – Originally Classified Documents 3Portion Marking 5Overall Classification Marking 6Classification Authority Block“Classified By” line 7“Reason” for classification line 8“Declassify On” line 9SECTION 2 – Derivatively Classified Documents 10Portion Marking 11Overall Classification Marking 12Classification Authority Block“Classified By” line 13“Derived From” line 14“Declassify On” line 16Declassification InstructionsMissing Declassification Instruction 17Multiple Sources 18OADR 20X1, X2, X3, X4, X5, X6, X7, and X8 21MR 22DNI Only/DCI Only 23Subject to Treaty or International Agreement 2425X1-human Exemption 25Use of 25X1 through 25X9 Exemptions 26Use of 50X and 75X Exemptions 26Derivatively Classifying from a Classification Guide 27SECTION 3 – Additional or Special Markings 29Classification Extensions 29Classification by Compilation 30Foreign Government Information 32Commingling RD and FRD with Information Classified 33under the OrderTransmittal Document 34SECTION 4 – Examples 35Summary of Changes From October 2007 Marking Book 42- 1 -