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We often need to bind files after finishing writing, but usually we don't carry glue on us. However for the
writing paper with binding function, we only need to bend the special paper along the dashed line in the
top left corner and fold it into the gap below the dashed line.
Southwest Jiaotong University
School of Art and Communication
Chengdu, China
Southwest Jiaotong University
School of Art and Communication
Chengdu, China
Li-hua,Shen
Dan,Su
Guo-na,Liu
Xiao-ming,Shi