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  • rot13
    /rot ther'teen/ [USENET from `rotate alphabet 13 places'] n., v. The simple Caesar-cypher encryption that replaces each English letter with the one 13 places... VIEW ENTIRE DEFINITION

  •  View Definition: flag day 

    flag day

    n. A software change that is neither forward- nor backward-compatible, and which is costly to make and costly to reverse. "Can we install that without causing a flag day for all users?" This term has nothing to do with the use of the word flag to mean a variable that has two values. It came into use when a massive change was made to the {Multics} timesharing system to convert from the old ASCII code to the new one; this was scheduled for Flag Day (a U.S. holiday), June 14, 1966. See also backward combatability.