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Punctuation & Capitalization

Rules for commas, capitals, and more

Our editorial style guide covers punctuation and capitalization at great length. Here are the main styles that apply to the web.


En dashes

Use an en dash in Indiana University–Purdue University Indianapolis. Use an en dash in year, day, hour, and page ranges, instead of a hyphen. En dashes should not have spaces on either side.

Em dashes

Em dashes are frequently used to set off parenthetical phrases, especially long or complex ones where something stronger than a comma is called for.

The building—one of our oldest—will be roofed.

Em dashes should not have spaces on either side.