The decline in demand for graph paper has been so severe that many companies have stopped producing it, and many office supply stores now carry a selection that might be limited to grid paper and axis paper. Spreadsheet programs automatically create graphs from collections of data, and free printable graph paper is easily found on the internet. Since the invention of the personal computer, the amount of graph paper sold has steadily declined. The sale of graph paper provided a substantial business for many printing and office supply companies during the 19th and 20th centuries. Graph paper is known by a variety of other names which include 'graphing paper,' 'grid paper,' and 'axis paper.' It is commonly used in math, engineering, science, and art classes. It is used for plotting mathematical functions, plotting experimental data, or drawing designs and diagrams. Graph paper is a sheet of paper that is printed with a grid of fine lines.
