dash

Always use an em dash (—) with no spaces when emphasizing a separate clause in a sentence. Use em dashes to enclose a word or word group that interrupts the main structure. The projects—all three of them—are due this afternoon. Dashes can be substituted for a colon (:).

An en dash (–) is used to show duration. He brought between 12–14 apples, 10:00 a.m.–11:00 a.m., 2010–2015.


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