Printed pages are an item created by crafting together more than one Printed Page or printed pages together with a string. The pages can be viewed by right clicking with it on the hotbar. While being viewed, the mouse scroll wheel or left/right arrow keys can be used to move between pages.
The order of the pages in the produced item is determined by the order the pages are arranged in in the crafting grid, from left to right then top to bottom. The position of the string in the crafting grid does not matter, nor does the exact position of the pages.