The maintenance administration division of an organizational maintenance department maintains a master paper or electronic message board of current messages with annotations of the action that was taken. A computer has three components—an input device (keyboard, mouse), an output device (printer, monitor), and a central processing unit (CPU). Word-processing computer software uses a wraparound feature instead of the automatic return of an electric typewriter. The Department of the Navy (DON) Information SECNAV Security Program (ISP) Regulation, SECNAVINST 5510.36, governs the handling, storage, and transmission of classified material. There are three classifications of classified material—Top Secret, Secret, and Confidential. The commanding officer is responsible for safeguarding classified material in his or her command. The U.S. Postal Service should not be used to transmit Top Secret material; Top-Secret material should be transmitted by cleared military personnel, DOD contractors, Defense Courier Service (DCS), or encrypted for electronic transmission. Secret matter may be transmitted by Registered Mail of the U.S. Postal Service. Confidential matter may be transmitted by First Class Mail of the U.S. Postal Service as long as the mail does not pass out of U.S. control. Secret and Confidential material may be transmitted by the methods that are authorized for Top-Secret material. The Department of the Navy Correspondence Manual, SECNAVINST 5216.5, gives procedures for preparing standard letters, memorandums, and endorsements. The standard letter requires l-inch margins on all sides. The identification symbol of a standard letter identifies the sender, acts as a reference, and is used for filing purposes. The endorsement is similar to a standard letter, is transmitted through another addressee before it reaches its final destination, and is used to approve, disapprove, forward, or comment on the contents of another document. The memorandum is an informal means to communicate within an activity or between Navy activities. A naval message is urgent correspondence that is transmitted through a Navy telecommunication center. Minim ize is a release restriction to restrict the release of the least urgent messages during an actual or simulated emergency condition. When the NARR set from the Message Text Format (MTF) Editor is used, a naval message must have two or more references. The Distributed Plain Language Address (PLA) Verification System (DPVS), which is used with the MTF Editor, gives originators of naval messages access to plain language address information. The directive issuance system provides naval activities with a uniform method of issuing directives. Directives are used to establish policy, organization, conduct, methods, or procedure. The two types of directives that are used in the directives issuance system are instructions and notices. A directive with a “C” before a directive number indicates that the directive is classified Confidential. A directive with an "S" before a directive number indicates the directive is classified Secret. A directive without a letter before the directive number is an unclassified directive. A facsimile machine or fax is an alternative to U.S. Postal Service transmission of a document. Users can send an exact copy of a document by using a fax. The Standard Subject Identification Codes (SSICs) provide a method for filing, identifying, and retrieving a document. SSICs are found in the Department of the Navy File Maintenance Procedures and Standard Subject Identification Codes (SSIC), SECNAVINST 5216.11. The maintenance administration division uses a reports tickler file to tracked recurring report requirements. On-the-job training is conducted during actual performance of a maintenance task. The tasks that you will perform as a maintenance administration worker are in direct support of the maintenance department’s maintenance effort. Depending on the activity to which you are assigned, your job may include other tasks, such as personnel evaluation and award recommendation preparation. Whatever your duties entail, remember that most of the correspondence that you will be tasked with will be transmitted outside of your immediate command. An activity’s level of professionalism is often measured by the quality of work of an activity’s maintenance administration division, with correspondence as an indicator of quality. As such, the work that you do will reflect directly on the Navy, your command, and you. 2-24