| Language mechanics guide meaning. Writings that conform to them 
                help the reader understand what you're saying and grasp it more 
                quickly. Spelling errors are usually perceived as reflecting the 
                writer's careless attitude. All mechanical errors undermine 
                writer credibility and can negate sage advice and persuasive 
                argument.   Indicators:Language is used properly including:
 •  Grammar and usage, e.g.,
 -  subject-verb agreement
 - pronoun references -- all pronouns clearly
 refer to definite nouns
 • Punctuation-   Commas are used to:
 * signal nonrestrictive or nonessential 
                material,
 * prevent confusion, and
 * indicate relationships among ideas and
 sentence parts.
  
                - Unnecessary commas that make sentences difficult to read are absent.
  
                - Two independent clauses are linked witha comma when used with a coordinating
 conjunction: ("and," "or," "but," "for,"
 "nor," "so," "yet"). Otherwise, a period or
 semi-colon is used.
  
                -  Apostrophes indicate possession for nouns ("Jeanne's hat," "several years'
 work") but not for personal pronouns
 ("its," "your," "their," and "whose").
 Apostrophes also indicate omissions in
 contractions ("it's" = "it is"). In general
 they are not used to indicate plurals.
 •  Spelling
 •  Capitalization
 
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