Active or Passive Voice
 
 In descriptive writing, you can use the active voice in most cases. Use the passive voice only when absolutely necessary. (Refer to Section 3 for the rules about active and passive voice.)
 
 Paragraphs
 
 RULE: 6.3 Use paragraphs to show your reader the logic of the text.
 
 In procedures, we identify separate steps to show the reader how the text is built up. But in descriptive writing, paragraphs do this job.  Each paragraph is a unit of closely related information that is separated from other units of information by white space. The reader can see the boundaries of such a unit of information and can then relate that unit to other similar units of information. Thus paragraphs show the reader the logic of the text: they are units of structured thought.
 
 RULE: 6.4 Each paragraph must have only one topic.
 
 Each paragraph must have only one topic. The paragraph must deal with that topic in a logical manner and must make the relationship between sequences of information clear to the reader. You must not put unrelated pieces of information into the same paragraph. If one paragraph is not sufficient for all the necessary information, divide the subject matter and deal with each separate aspect in its own paragraph.