One of our Mandarin teachers discovered this feature the other day — very useful for students to practice handwriting Chinese characters!
Apple appears to be bringing touch features to the Mac using the trackpad rather than the screen. The handwriting feature includes virtual buttons that you press by tapping along the right or left edge of your trackpad, as if you were tapping a phone or tablet screen. David Pogue writes,
Touch-screen computers don’t work. There, I said it. Spending the day with your arm outstretched, manipulating tiny controls on a vertical surface is awkward and exhausting. The ache you feel later is not-so-affectionately known as Gorilla Arm.
Apple has built what it considers a better solution, a horizontal multitouch surface. That’s the trackpad of its laptops, and the top surface of its current mouse.