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The edge of the common notebook pages is a straight line, so it’s not very comfortable when turning pages and it is not easy to turn to the exact page people want to.
In order to let people turn pages more conveniently when using a notebook, we set aside a half moon shape for finger size on the outside edge of the notebook pages. In this way, people can turn pages conveniently and comfortably, without destroying the practicability of the notebook.
Yaoming Zheng;Zhaoqiang Zhu;Yanfei Li;Xiaoqing Chen