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62 Chapter 5 Last, but Not Least
Mouse
Position the mouse at the same height as your keyboard and within comfortable reach.
Keyboard
When you use the keyboard, 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.
Use a light touch when typing and keep your hands and fingers relaxed. Avoid rolling
your thumbs under your palms.
Change hand positions often to avoid fatigue. Some computer users may develop
discomfort in their hands, wrists, or arms after intensive work without breaks. If you
begin to develop chronic pain or discomfort in your hands, wrists, or arms, consult a
qualified health specialist.
More information about ergonomics is available on the web:
Cleaning Your iMac
Follow these guidelines when cleaning the outside of your iMac and its components:
 Shut down your iMac and disconnect all cables.
 Use a damp, soft, lint-free cloth to clean the exterior of your iMac. Avoid getting
moisture in any openings. Do not spray liquid directly on your iMac.
 Don’t use aerosol sprays, solvents, or abrasives.
www.apple.com/about/ergonomics