In typography, a common type of pi character, available in a variety of sizes, used for decorative or organizational purposes. Bullets should be as close to the x-height of the text they accompany as possible. The point size of the bullet may need to be increased so that it optically approximates the size of the text; it is generally inadvisable to make a bullet larger than the x-height of the accompanying text. Bullets are often used to delineate and emphasize points or examples. They are available either closed or open. A similar pi character, and as widely used, is a box.