fill in on the left. The font arrangement of bookmarks is generally vertical, from right to left and from top to bottom, pursuing the alignment of heads. Therefore, it can be seen that the blank of bookmarks is on the left, and bamboo can be filled in on the left, which is not only pleasing to the eye, but also rising. Bookmarks should be made with suitable materials and pen and ink. The thickness of bookmarks should be moderate, too thick is not easy to flip, and too thin is easy to damage. In addition, bookmarks should be fully dried before use.