The modern growth of interest in origami dates to the design in 1954 by Akira Yoshizawa of a notation to indicate how to fold origami models.[5] The Yoshizawa-Randlett system is now used internationally. Today the popularity of origami has given rise to origami societies such as the British Origami Society and OrigamiUSA. The first known origami social group was founded in Zaragoza, Spain, during the 1940s.[6]