Notebook paper is a type of writing paper commonly used in schools and offices. It typically features a grid of horizontal and vertical lines, which help guide handwriting and keep it neat. The paper is often bound in notebooks, making it easy to flip through pages and organize notes. Most notebook paper is made from wood pulp and comes in various sizes, such as A4 or letter size. Some types have additional features, like perforated edges for easy tearing or margins for annotations. It is widely used for taking notes, writing assignments, and sketching ideas.