A thick sheet of paper is placed on a wooden slab. A special scale is there on the paper, on which there are grounds of 6 dots each in a row. On that paper, we write the letters bv making a noie accordingly with the help of a pomted pen, which is known as stvlus.
Eg. if we want to write a letter ‘A’ then, a hoie is made with a pomted pen on the first dot. Alter this, the paper is turned over and the notes made can be felt as raised dots on the back side. By touching them, whatever is written on that paper can be read.