Punctuation / A Primer of Information about the Marks of Punctuation and their Use Both Grammatically and Typographically

by Frederick W. Hamilton

4. A period marks the end of a sentence.

5. A dash marks abruptness or irregularity.

6. Parentheses enclose interpolations in the sentence.

7. Brackets enclose irregularities in the sentence.

8. An interrogation asks a question for an answer.

9. An exclamation marks surprise.

10. An apostrophe marks elisions and the possessive case.

11. Quotation marks define quoted words.

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