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62 Chapter 4 Last, but Not Least
Cleaning your MacBook Air screen To clean your MacBook Air screen, first shut down
your MacBook Air and unplug the power adapter. Then use the cleaning cloth that
came with your MacBook Air to wipe the screen. Dampen the cloth with water if
necessary. Do not spray liquid directly on the screen.
Understanding Ergonomics
Here are some tips for setting up a healthy work environment.
Keyboard and Trackpad
When you use the keyboard and trackpad, your shoulders should be relaxed. Your
upper arm and forearm should form an angle that is slightly greater than a right angle,
with your wrist and hand in roughly a straight line.
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