–30– has been traditionally used by journalists in North America to indicate the end of a story. It is commonly found at the end of a press release. There are many theories about how the usage came into being, e.g. from that number's use in the 92 Code of telegraphic shorthand to signify the end of a transmission in the American Civil War era.
In Quebec, a journalism magazine is called -trente-, the French word for thirty.
In popular culture
- -30-, a 1959 motion picture about work in a Los Angeles newspaper directed by, produced by, and starring Jack Webb.
- "–30–", the series finale of the television series The Wire (2002-2008), itself capping a season concerning the media and the Baltimore Sun.
- "30", an episode of the television series Law & Order: Criminal Intent about a poisoned reporter.
- In several Superman stories from various titles, failure by a Daily Planet employee to use this signature proved to be a plot point revealing a character's impersonation, mind control, etc.
- At the end of the 1952 film, Park Row, about the birth of the New York Globe in 1886, the film ends with the word "THIRTY" displayed instead of "THE END".
- Kogan, Hadass (2007). "So Why Not 29?". Archived from the original on 2010-12-12. Retrieved 2016-05-22.
- Melton, Rob (2008). "The Newswriter's Handbook: The Word: origin of the end mark -30-" (PDF). Journalism Education Association. p. 9. Retrieved 2016-05-22.
- "WESTERN UNION "92 CODE" & WOOD'S "TELEGRAPHIC NUMERALS"". Signal Corps Association. 1996. Retrieved 2008-02-25.