Just one example: let's say you want to save an image from a web page to your desktop. With the Apple's trackpad, you can start to drag the image, holding it wi

Just one example: let's say you want to save an image from a web page to your desktop. With the Apple's trackpad, you can start to drag the image, holding it with your thumb on the bottom of the trackpad, four-finger swipe-up to show the desktop, move the image to where you need it, and release your thumb to drop. Four-finger swipe again to bring back your browser.