Hiden Senbazura Orikata, The Secret of One Thousand Cranes Origami in English, is an origami book printed in 1797. It contains the methods for folding various linked cranes from different arrangement of connected squares. To show the position of each of the cranes in each design, a form of simple crease patterns are used. There is no differentiation between valley and mountain folds shown. Simply dashed (- - -) lines are used for creases, and basic solid lines are used for cuts, similar to how such things are represented in modern origami diagrams.