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Sign Language

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Sign Language is a type of non verbal communication, that uses hand signals and gestures.[1]


Several such languages exist within the Imperium, including Graph-binarc, Voidsys, the Sisters of Silence's Thoughtmark and the Space Marines' Battle-Sign.[1] The Space Marine Legions also used Battle-Sign along with Hortcode,[2a] which was also known to the Perpetuals John Grammaticus and Ollanius Persson.[2b]