–30– has been traditionally used by journalists to indicate the end of a story. 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 another theory, the "-30-" originated when stories were written in longhand; X marked the end of a sentence, XX the end of a paragraph, and XXX meant the end of a story. (The Roman numerals XXX equate to 30.)
In popular culture
- -30-, a 1959 motion picture about work in a Los Angeles newspaper directed, produced and starred in by 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 "So Why Not 29" American Journalism Review. Retrieved 2009-02-06.
- "WESTERN UNION "92 CODE" & WOOD'S "TELEGRAPHIC NUMERALS"". Signal Corps Association. 1996. Retrieved 2008-02-25.