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Appendix B Safety, Use, and Care Information 79
Mouse
Place the mouse at the same height as the keyboard and within a 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.
For More Information
Go to www.apple.com/about/ergonomics/.
LL3734M40.book Page 79 Thursday, July 6, 2006 3:45 PM