Punctuation is used to create sense, clarity and stress in sentences. You use punctuation marks to structure and organise your writing. You can learn usages of Punctuation Rules, Spacing, Periods, Commas, Semicolons, Colons, Quotation Marks, Parentheses and Brackets, Apostrophes Hyphens, Dashes, Ellipses, Question Marks, Exclamation Points, Slashes from this app.