Apple MB417LL User Guide - Page 62

Cleaning Your Apple Mouse You may need to clean your mouse from time to time to remove dirt and dust that has accumulated in the scroll ball area. Hold the mouse upside-down and roll the scroll ball vigorously with the cloth that came with your iMac, or another clean, soft, lint-free cloth, to help dislodge any particles that may interfere with proper scrolling. Understanding Ergonomics Here are some tips for setting up a healthy work environment. Keyboard When you use the keyboard, your shoulders should be relaxed. Your upper arm and forearm should form an approximate right angle, with your wrist and hand in roughly a straight line. Change hand positions often to avoid fatigue. Some computer users might 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. Mouse Position the mouse at the same height as the keyboard and within a comfortable reach. 62 Chapter 5 Last, but Not Least