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practical
John Smith

John has been with the BOS since it was first formed in 1967 and has given years of invaluable service as our chairman. He continues to study paper-folding from a theoretical standpoint, producing many informative and thought-provoking essays. He developed a mathematical way of describing folds (OIL, the Origami Instruction Language) and also "Pureland", which requires a model to be folded using only valley or mountain creases

   
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