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Dash
The dash can be used to show a sudden break in thought, to set off added information, to show that someone’s words are being interrupted, and to emphasize an idea.
488.1 To Indicate a Sudden Break
A dash can be used to show a sudden break in a sentence.
There is one thing—actually several—that my parents dislike about cell phones: being “connected” all the time, looking out for drivers who are talking on the phone, and getting “surprise” charges on the phone bill.
488.2 To Set Off Added Information
A dash can be used to add explanatory information to a sentence.
Interest in clean energy systems—including solar, wind, and geothermal—is creating thousands of new jobs.