Material    Preservation of Supply Spaces    Safety Precautions in stowing safe semisafe, and  dangerous  materials The Commercial and Government Entity (CAGE) provides a means of identifying manufacturers without writing  out  the  complete  name  and  address.  The Defense   Logistics   Agency   has   assigned   five-digit identifying  numbers  to  all  manufacturers  and  suppliers that contract with the government. You will use this code  to  identify  the  stock  items  in  stock  lists  and cross-reference listings. It is published on microfiche by; (1) Name-to-code and (2) code-to-name. Manufacturers’ Instruction Books are prepared for all   Navy   equipment. They   contain   operating instructions,   maintenance   and   test   procedures, drawings,  and  parts  lists.  You  will  use  the  parts  lists  to identify repair parts, Instruction books are normally retained  and  used  by  the  technical  ratings.  They  will assist   you   in   identifying   the   part   number   and nomenclature  of  the  required  part. This has been a very brief look at the publications that you will use most often. Most of them are covered in  greater  detail  in  later  chapters.  You  cannot  become an expert on publications by reading a few paragraphs about them; you must use them. Navy Supply Corps Newsletter The Newsletter  is published monthly by the Naval Supply Systems Command. It is distributed to Supply Corps  officers  and  Master  and  Senior  chief  petty officers in supply ratings. While it is not an official publication,  it  contains  much  information  that  will  be useful to you. One featured column is directed toward enlisted personnel  in  supply  ratings.  The  Newsletter  contains articles on new procedures and supply operations in the Navy. It also lists the latest changes to NAVSUP and NAVCOMPT   publications. CHANGES TO PUBLICATIONS Regardless   of   how   well   you   can   use   supply publications, if they aren’t up to date you are wasting your  time.  Changes  should  be  entered  when  received. This  prevents  loss  and  ensures  that  the  latest information  is  being  used.  There  are  different  types  of changes and the methods of entering them are different. Always  read  the  accompanying  instructions  before making  the  change. Pen-and-ink Changes— These changes are usually distributed as a message letter or notice and require you to change words and/or sentences in a publication. Changes  to  the   NAVSUP   and  NAVCOMPT Manuals and other publications requiring extensive changes  are  made  by  page  changes.  This  involves removing an old page and inserting a new one in its place.  Most  of  these  changes  will  also  include  a  list  of “Effective Pages” or “Sheets in Force” which should be checked  after  the  change  has  been  made.  This  makes sure that all pages that should be in the manual are there. Change  Bulletins  are  usually  used  to  change stocklists, catalogs, and cross-reference listings. The change bulletin will refer to the basic publication that it changes  and  will  state  whether  it  is  cumulative  or noncumulative. A cumulative change bulletin is one that contains all changes previously issued and the older bulletins  should  be  discarded.  Example:  (Change Bulletin #3 replaces Change Bulletin #2 which should be  destroyed).  Noncumulative  change  bulletins  must all be retained until the basic publication is reprinted. Always  read  the  instructions  BEFORE  you  make  the change. CLASSIFIED  INFORMATION Classified information is a term used to include any information  or  material  requiring  protection  in  the interest  of  national  defense.  You  may  come  in  contact with  classified  information  at  any  time  and  you  must know  the  different  classifications  used  and  their meanings.   The   Department  of  the  Navy  Security Manual  for  Classified  Information,  OPNAVINST 5510.1,  is  the  guiding  publication  for  handling  all classified matter in the Navy. Ships not only have a large  number  of  classified  publications  and  other written materials on board, they also have classified equipment.  The  supply  department  will  probably  carry classified  repair  parts  for  this  equipment. Additional information is contained in  Military Requirements for Petty Officer Third Class  and Military Requirements for Petty Officer Second Class. If  your duties  required  you  to  handle  classified  information, you  should  study  the  Security  Manual   and   local instructions to be sure you comply with all requirements of  handling,  stowage,  and  transmissions. 3-10