Keywords: QRCode-4-Levels,Masks.png en wikipedia 2012 February 23 en Created by me 2012-1-5 Own <br />Transferred from http //en wikipedia org en wikipedia Wtuvell at http //en wikipedia org en wikipedia diagram en wikipedia Wtuvell Original upload log page en wikipedia QRCode-4-Levels Masks png 2012-01-05 21 58 Wtuvell 1100×850 274761 bytes <nowiki>Created by me </nowiki> QR Code Diagrams |