Editing Scrollbar (section)

=== Mac trackpad ===
A more modern scrolling technique is using the two-finger scroll on a Mac trackpad. In this technique, the tips of two fingers from the same hand are placed on the surface of the trackpad and moved accordingly. If the user has their trackpad scrolling direction set to "natural," moving their two fingers toward the top of the trackpad will cause the page to scroll up towards the top of the page; conversely, moving their fingers toward the bottom of the trackpad will cause the page to scroll down towards the bottom. If the user "flicks" their fingers by moving their two fingers very quickly across the trackpad and then releasing their fingers, the page will continue to scroll in the direction in which they flicked until it eventually slows down and stops, either because one of the scroll limits is reached or because the scroll speed slows down so much that it eventually simply stops. This feature is called inertia.