Check the paper. Anonymous manuscript paper is a kind of paper that is neatly divided by standard and unified grids or horizontal lines for handwriting, so as to facilitate reading and counting words. It is a kind of manuscript paper that can't be specially named, so it is called anonymous manuscript paper. Specifications are usually 20 * 20, 15 * 20, also known as 300 grids, 400 grids and 500 grids.