For older versions of the macOS, follow these steps to change the mouse wheel scrolling direction: Click the Apple icon in the upper left-hand corner of the screen. Click System Preferences.

In Mac OS 8.5 through Mac OS 9 (and for Classic applications in Mac OS X), Tom Schmidt’s freeware Scroll Bars (5.6K download) lets you enable double arrows at each end of scroll bars. In Mac OS X, you ...