Part One Punctuation
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I End punctuation
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..2
1 Period .
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1 As end-up signal
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2 As omission signal
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.3
3 As decimal marker
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.4
4 As separator
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2 Question mark ?
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1 Used after every direct question, including a short within-sentence
parenthetical question
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2 Used within parentheses to express the writer’s uncertainty about the
correctness of some facts
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3 Exclamation point !
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II Internal punctuation marks
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1 Comma ,
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1 As introducer
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