Ruled paper (also known as lined paper) is writing paper that has lines written on it to serve as a guide for handwriting. The lines are frequently printed at a fine width and in light color, and this type of paper is commonly referred to as feint-ruled paper. Block printing and typewriting require ruled paper. Lined paper was originally manufactured from the surplus fibers of rags which were used again for writing upon. Nowadays, it is made from wood pulp or cotton linters. Rags are old cloths that have been used previously for clothing or household purposes. They include pieces of old linen, cotton, or hemp fabric that can be found lying around in home improvement stores or antique shops. Old newspapers are also considered rags because they are discarded papers that have been used previously for writing or printing on. Rags get mixed up with other stuff in building sites so always check your rubble before recycling it. There are two types of lines on paper: cross hatching and shading. Cross hatching consists of diagonal lines that cross each other at right angles while shading consists of horizontal and vertical lines that meet at a corner. Both methods are used to give an effect similar to drawing or painting. Cross hatching is usually used when you want to show depth in your picture while shading is used to give visual interest to your page.