This is one format that cursors (the mouse pointer design) can be stored in, under Microsoft Windows 3.x and later versions of Windows. In Windows 95, NT and later, this format has been largely superseded by the ANI format which allows animated and color cursor designs. The CUR format also allows transparency so that cursors do not have to appear rectangular when displayed on screen. CUR files are not compressed. However, as the images that they contain are usually quite small, compression is not really needed anyway.