C3 Slip

I.M.R. Handbook


Document Classification System


A document has a three-part classification attached. For example:


O U O


The first letter contains information about permitted distribution:


O

Open

Any employee can request access

R * **

Restricted

Compartmentalised intelligence


The second letter contains information about the level of importance attached to the classification:


U

Unrestricted

Available to anyone

T *

Theatre / Tower

Restricted to an area

C * **

Closed

Available only to mission staff


The last letter contains information regarding the source of the document:


P

Public

Available to general public

O

Open

Acquired through admitted capability

C *

Closed

Acquired from allies

S * **

Secret

Acquired through non-public capability


In general, a document should not be distributed further than neccesary for operational requirements – and certainly not to anyone without clearance.


If in doubt, consult with your team leaders.












* : Not for further distribution outside of the organisation.

** : Not for further distribution at all.