Origami/Techniques/Yoshizawa-Randlett system

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Many origami books begin with a description of basic origami techniques which are used to construct the models. The folds are normally described using the Yoshizawa-Randlett diagramming system. There are two main types of origami symbol, lines and arrows.[1] The arrows show how the paper is bent or moved. Lines show various types of edges:

  • A thick line for the edge of the paper
  • A dashed line for a valley fold
  • A dashed and dotted line for mountain folds (there may be one or two dots per dash depending on the author)
  • A thin line for a previous fold
  • A dotted line for a previous fold that's hidden, or sometimes a fold that's not yet made.

Paper representation

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There are some symbols that have been used by some authors but are not accepted into the Yoshizawa-Randlett system. Robert Lang has introduced a “view from here” symbol that looks like an eye which has proven to be very useful, especially with his signature three-dimensional models.

Several different methods have been introduced to point out to the folder to pay attention to a certain spot; these range from a letter or number to a circle, dot, or other geometric symbol.


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  1. Peter Engel (1989). Origami from Anglefish to Zen. Dover. p. 8. ISBN 978-0486-28138-4.