Using abbreviations, acronyms, and short forms
Use acronyms, abbreviations, and short forms to avoid repetition and make your text more concise.
In titles, use the acronym. Then, write out the acronym on first mention in the body of the topic or article, followed immediately by the abbreviation in parentheses.
For example: 
In the body of a topic or article, write out the acronym on first mention, followed immediately by the abbreviation in parentheses.
For example: Requirements are part of the suite of application development tools used in the Direct Capture of Objectives (DCO).
On subsequent mention in the same topic or article, you can use the abbreviation without writing it out.
Note: Some very well-known industry-standard abbreviations do not need to be written out. If in doubt, search for the term in the Word List.
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