The MacBook Air includes an oversize trackpad with multi-touch technology. You can pinch, swipe, or rotate to zoom in on text, advance through a photo album, or adjust an image:
The new gestures work in existing Apple applications such as Finder, iPhoto and Safari, but carry slightly different functionality in each application. For example you can use the “swipe” gesture to drill down and up different folder levels in Finder.
You can double-tap and move the whole window, not just the cursor. When you’re in a large photo you can pan around with two fingers. When you want to rotate a photo, just rotate your fingers. If you want to go between photos, pan right, pan left — if you want to zoom, pinch in and out. All of those settings can be switched on via the System Preferences:
Another “secret” feature is the zoom-function: Hold down CTRL and then use two-finger swipe on the trackpad to zoom in/out of content.
And there is nothing cooler to show your Windows-friends how you can rotate pictures or PDF’s in OS X by just rotating two fingers on the touchpad – smile.