In addition to the typed classification, stamp the classification  (with  red  stamped  lettering,  if  possible)  in the center of the top and bottom margins. When you use either of the terms Top Secret, Secret, or Confidential in the body of correspondence to denote a classification category, capitalize only the initial letter or letters. For detailed  instructions  regarding  classified  corres- pondence preparation, refer to the SECNAVINST 5510.36. "FROM” LINE: Type the “From” line two lines below the date in the identification symbol or two lines below the classification at the left margin. Allow two spaces  between  the  colon  after  “From”  and  the beginning of the addresser’s title. The “From” line identifies by title, the official in authority (usually the commanding officer or the officer-in-charge) over the activity  with  cognizance  over  the  subject  that  is covered by the letter. If an addressee needs to reply to the letter, he or she should direct the reply to the addresser.  The  “From”  line  furnishes  the  addressee with this information. Remember that all standard letters must have a “From” line. Use only long address titles in this section. "TO" LINE: Place the “To” line on the next line below the “From” line. Allow four spaces from the colon after “To” to the beginning of the title of the addressee. When the functional title does not clearly distinguish  the  addressee,  give  sufficient  information as to the intended activity to assure that the letter is correctly   delivered.   Except   when   you   prepare correspondence that is intended for a ship, follow the title  of  the  addressee  with  the  title  or  the  code designation (in parentheses) of the office that has immediate  responsibility  for  the  subject  matter.  Use  the complete mailing address with the ZIP code for the "To" addressee when you want the address for a record. "VIA" LINE: Place the "Via" line, if any, on the next line below the “To” line. If there is more than one ‘Via” addressee, number each with a numeral that is enclosed in parentheses: (1), (2), (3) and so forth. “Via” addressees are used when one or more activities should see a letter before it reaches the activity that it is addressed to. The numerals indicate the sequence through which the correspondence is sent. "SUBJECT" LINE: Use the abbreviation “Subj” to introduce a topical statement of the subject of the correspondence. Place the "Subj" line two lines below the preceding line of type. Allow two spaces from the colon after "Subj" to the beginning of the subject. Use normal word order. Capitalize all letters in the subject line. A letter of reply usually repeats the subject of the incoming  letter. "REFERENCE"  LINE:  Use  the  abbreviation "Ref" to identify applicable references. References are previously  released  correspondence  or  conversations that have a direct bearing on the correspondence that you are preparing. Type the "Ref" line two lines below the last line of the subject line. Begin each reference citation on a new line. Allow three spaces between the colon  after  "Ref"  and  the  beginning  of  the  first reference. List references in the order that they are discussed in the text of the communication. Identify references  with  small  letters  that  are  enclosed  in parentheses:   (a),   (b),   (c),   and   so   forth.   When referencing a letter, you should include the following information: The abbreviated title of the originator Location of the originating activity All identification symbols that were assigned to the referenced letter The abbreviation “ltr” or “memo” The  date Other  types  of  references  include  publications, instructions,  telephone  conversations,  endorsements, and messages. When documents other than letters or memos are listed as references, they should be fully identified as to origin, title, and date. Specific samples of  various  types  of  references  are  listed  in SECNAVINST   5216.5. "ENCLOSURE"  LINE:  Include  the  abbrevia- tion “Encl” in the heading when correspondence that bears directly on the standard letter is forwarded with the  letter.  Place  the  “Encl”  two  lines  below  the preceding  line  of  text  with  each  enclosure  notation beginning on a new line follow the colon after “Encl” with two spaces. Number enclosures with numerals in parentheses: (1) (2), and so forth. List each enclosure in the order that it is discussed in the text. Identify each enclosure  that  accompanies  the  letter  by  typing, stamping, or writing "Encl" in the lower right corner plus the number that is assigned to it in parentheses, for example, Encl (1). TEXT: Begin the text (or body) of the letter two lines below the heading information. When drafting a letter, begin by making the opening paragraph clear and concise. 2-10