Where Did Your Scroll Bars Go? Use This Setting to Ensure They Show
On the Mac, scroll bars are essential for both orienting yourself and navigating within a Web page or document window. But they may not appear unless you hover the pointer over the right spot or start scrolling with a gesture on a trackpad or a turn of a mouse scroll wheel. If that bothers you, go to System Preferences > General and under Show Scroll Bars, select Always. That way, scroll bars will always be visible without you having to guess where they are or perform some incantation to reveal...