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Mac OS offers a few ways to customize the way your Mac shows information on your display. First and foremost is the Monitors control panel, which will let you select the effective horizontal and vertical resolution in pixels. This value usually varies between 640x480 and 1280x1024, but may be different depending on your display card and monitor. But it is a pain to keep having to change your resolution to meet the needs of the work you are doing. If only there was a way to magnify portions of your screen
Check It Out: Need To Get The Big Picture? Forget The Magnifying Glass, Get Glass II