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  2. List of U.S. security clearance terms - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._security...

    Security clearances can be issued by many United States of America government agencies, including the Department of Defense (DoD), the Department of State (DOS), the Department of Homeland Security (DHS), the Department of Energy (DoE), the Department of Justice (DoJ), the National Security Agency (NSA), and the Central Intelligence Agency (CIA).

  3. International Code of Signals - Wikipedia

    en.wikipedia.org/wiki/International_Code_of_Signals

    The International Code of Signals was preceded by a variety of naval signals and private signals, most notably Marryat's Code, the most widely used code flags prior to 1857. What is now the International Code of Signals was drafted in 1855 by the British Board of Trade and published in 1857 as the Commercial Code.

  4. Secret Coders - Wikipedia

    en.wikipedia.org/wiki/Secret_Coders

    Secret Coders is a series of graphic novels that combines logic puzzles, basic programming instruction, and a story where a group of seventh graders uncover a secret coding school. The series is written by Gene Luen Yang , illustrated by Mike Holmes, and published by First Second Books .

  5. Handkerchief code - Wikipedia

    en.wikipedia.org/wiki/Handkerchief_code

    The handkerchief code (also known as the hanky code, the bandana code, and flagging) [1] is a system of color-coded cloth handkerchief or bandanas for non-verbally communicating one's interests in sexual activities and fetishes. The color of the handkerchief identifies a particular activity, and the pocket it is worn in (left or right ...

  6. The Secret Barrister - Wikipedia

    en.wikipedia.org/wiki/The_Secret_Barrister

    The book's dustjacket states that the author, "The Secret Barrister", is a junior barrister practising criminal law before the courts of England and Wales. [1] " The Secret Barrister" is also a blogger who in 2016 and 2017 was named Independent Blogger of the Year at the Editorial Intelligence Comment Awards. [1]

  7. Secret Service code name - Wikipedia

    en.wikipedia.org/wiki/Secret_Service_code_name

    The United States Secret Service uses code names for U.S. presidents, first ladies, and other prominent persons and locations. [1] The use of such names was originally for security purposes and dates to a time when sensitive electronic communications were not routinely encrypted ; today, the names simply serve for purposes of brevity, clarity ...

  8. Code-switching - Wikipedia

    en.wikipedia.org/wiki/Code-switching

    Code-mixing is a thematically related term, but the usage of the terms code-switching and code-mixing varies. Some scholars use either term to denote the same practice, while others apply code-mixing to denote the formal linguistic properties of language-contact phenomena and code-switching to denote the actual, spoken usages by multilingual ...

  9. International maritime signal flags - Wikipedia

    en.wikipedia.org/wiki/International_maritime...

    One or more flags form a code word whose meaning can be looked up in a code book held by both parties. An example is the Popham numeric code used at the Battle of Trafalgar . In yacht racing and dinghy racing , flags have other meanings; for example, the P flag is used as the "preparatory" flag to indicate an imminent start, and the S flag ...