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Punctuation provides vital clues that aid reader comprehension. It’s governed by well documented rules. For example, every English sentence requires end punctuation (unless it’s a title or a heading). Within those rules are stylistic choices, which we’ll cover here.

The more punctuation you add, the more complex a sentence becomes. If a sentence contains more than a comma or two and ending punctuation, consider rewriting it to make it clearer and more succinct.

Punctuation guidelines

Refer to the following sections for specific guidance:

Additional punctuation guidelines


Incorrect: “Info” isn’t an acceptable abbreviation for “information” in professional communications.

Correct: Info isn’t an acceptable abbreviation for information in professional communications.

  • Semicolons between independent clauses, contrasting statements, and items in a list.

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