em dash

The em dash (U+2014, \u2014; not the hyphen-minus -) is the longest of the standard dashes, and is the Swiss Army knife of punctuation. Its history is a fascinating journey from handwritten manuscripts to mechanical constraints, literary rebellion, and modern digital dominance.

Here is a breakdown of how the em dash evolved:

History of the em dash

Early Beginnings (15th-18th Century)

• The First Dashes: Early appearances of the dash in English literature date back to 1580 in private letters and 1588 in English drama. They were often used to indicate pauses, self-interruption, or an unfinished thought
• Gutenberg and Early Printing: The em dash officially emerged as a standardized typesetting mark during the 15th-century printing revolution