Wing (image) Penn State Caption The researchers used principles of origami paper folding to physically visualize the transverse folding of the wings. In their paper, they included a print, cut and fold template to help readers comprehend the wing fold system. Credit István Mikó/Penn State Usage Restrictions non commercial use only Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.