English Composition › Section U · Handbook: grammar, style, and documentation › Topic U.8
Punctuation: commas, apostrophes, and more
Punctuation marks are traffic signals for readers: they show where ideas join, pause, belong to someone or point ahead. Learning what each mark does, and where it never goes, removes most of the errors that make careful writing look careless.
In this topic
- Commas that join and introduce
- Commas in series, dates and places
- Where commas do not belong
- Apostrophes for possession
- Contractions and apostrophe errors
- Semicolons
- Colons
- End marks, dashes and parentheses
- Worked example: editing a notice
- Worked example: one idea, four marks
- Common mistakes to avoid
- Key takeaways
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