MAINTENANCE OF PUBLICATIONS AND INSTRUCTIONS

and training of fleet personnel in MILSTRIP. It contains illustrations and explanations that make it a valuable training aid as well as a handy reference. Navy Correspondence Manual The Navy Correspondence Manual, SEC- NAVINST 5216.5, as mentioned previously in this chapter, is the official guide for the preparation of naval correspondence. Standard Subject Identification Codes The Standard Subject Identification Codes (SSIC), SECNAVINST 5210.11, provides stan- dard subject identification coding for classifying correspondence, numbering instructions and notices, and assigning report symbols. MAINTENANCE OF PUBLICATIONS AND INSTRUCTIONS The technical publications and instructions maintained by a technical library are only as good as the most current up-to-date issue. Your responsibility does not end after you make sure all publications you require are available. They must be kept current. The publications that you receive by automatic distribution will also be up- dated by automatic distribution of changes. Those publications that you obtain for one-time use only must be reviewed periodically to determine the effective dates. Technical manuals and publica- tions are updated by two methods, changes and revisions. Change A change to a manual or publication consists of a set of replacement change pages for the area of the manual affected by the change action. This approach provides both an economical and expedient method of issuing new or corrected material to the user. Upon issue, it is necessary for the recipient to remove the superseded pages and insert new material. This action is required for paper manuals only. When a change to a microfiche is required, the microfiche is usually reissued in its entirety. Revision Unlike a change, a revision constitutes a com- plete reissue or a replacement of a manual with all change information incorporated. Issue of a revision normally takes place when 60 percent or more of the document is affected by a single change or accumulated changes, or in the event manual use would be impaired because of change complexity. 1-21