355 SECURITY CLASSIFICATION CONTROL (R)
Indicators First Controlled element 0 Document 1 Title 2 Abstract 3 Contents note 4 Author 5 Record 8 Other element Second Undefined; contains a blank (^)
Subfield Codes $a Security classification (NR) $b Handling instructions (R) $c External dissemination information (R) $d Downgrading or declassification event (NR) $e Classification system (NR) $f Country of origin code (NR) $g Downgrading date (NR) $h Declassification date (NR) $j Authorization (R) $6 Linkage (NR) $8 Field link and sequence number (R)