Find any board, about the size of a book, and then get two small clips. Where to turn the book, fix both sides of the page on the board with a small clip, stand up, and the page number will not be turned casually.

A book stand is an object used to support books to stand stably. Iron, stainless steel and many other materials are made into L-shapes and appear in pairs. The book stand can prevent a row of standing books from tilting and tilting, thus preventing the books from being bent, bent or damaged. Bookstall can also be used to summarize and organize different kinds of books. Libraries often use book stands to sort out cracked bookshelves, and companies and individuals can also use book stands to open up neat books and materials space on flat desks. In the concept of stamp duty, "book stand" refers to various contracts, documentary evidence, account books and so on. Produced in written form refers to the act of signing contracts and agreements.