Filler text (also placeholder text or dummy text) is text that shares some characteristics of a real written text, but is random or otherwise generated. It may be used to display a sample of fonts, generate text for testing, or to spoof an e-mail spam filter. The process of using filler text is sometimes called greeking, although the text itself may be nonsense, or largely Latin, as in Lorem ipsum.

A specimen sheet of typefaces and languages, by William Caslon I, letter founder; from the 1734 Cyclopaedia. It uses as filler text an excerpt from Cicero's first Catiline Oration: "Quousque tandem abutere, Catilina, patientia nostra?"

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