Vista includes different features that make it easier for people with vision impairments to use the operating system. One such feature is known as the Magnifier. The Magnifier enlarges the screen so it is easier to read. The Magnifier works by enlarging a portion of the screen as it is being displayed. The feature is intended for those users who have slight vision problems.
You can open the Magnifier by clicking Start | All Programs | Accessories | Ease of Access | Magnifier. The Magnifier Settings dialog box will appear. You will also notice that as you move your mouse around your desktop, a portion of the screen is magnified. From the Magnified Settings dialog box, you can control the Magnification level. You can also configure tracking settings such as if you want the magnifier to follow your mouse cursor, follow your keyboard strokes, and follow your text editing.