After you complete the steps, you will now be able to scroll windows even when they are not focused and you are hovering over them. Once you complete the steps, the next time you use the mouse ...

The Microsoft mouse popularized the scroll wheel. See scroll mouse. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

A mouse with a rubber or plastic wheel. When the wheel is moved on the scroll mouse, the content in the active application window scrolls up or down. Introduced in the mid-1990s, the scroll mouse ...