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When to Use the Em Dash—and the En Dash and 3 Em Dash

If you want to master some of the more mysterious elements of grammar, we’re going to have to talk about dashes—yes, those simple horizontal lines that seem to present themselves unannounced, only to stretch your prose further along the page. Did you know there are three—yes, three whole kinds of dashes—in the English language, and that the em dash in particular is historically tied to a raging de