In this video tutorial, viewers learn how to zoom in and out on a Mac computer. To access the zooming tool, begin by clicking on the Apple menu and select System Preferences. Under System, select Universal Access and check On under Zoom. In Options, users are able to set specific settings such as the maximum and minimum range of zoom. The keyboard shortcut for zooming in is: Option, Command and =. The keyboard shortcut for zooming out is: Option, Command and -. This video will benefit those viewers who use a Mac computer, and would like to learn how to zoom in and out to be able to look at specific detail or because they have poor eye vision.