Apple M7469B/A User Guide - Page 34
Avoiding fatigue
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Important Don't lift the computer using the flip-out foot. You could damage your computer. To move your computer, grab the handle on the top of the computer with one hand; with your other hand, hold the bottom of the computer. Shoulders relaxed Forearms and hands in a straight line 45-70 cm (18-28 in.) Top of the screen at or slightly below eye level (You may need to adjust the height of your monitor by raising your work surface.) Lower back supported Forearms level or tilted down slightly Screen positioned to avoid reflected glare Thighs tilted slightly Feet flat on the floor Clearance under work surface Avoiding fatigue m Change your seated position, stand up, or stretch whenever you start to feel tired. Frequent short breaks are helpful in reducing fatigue. m Use a light touch when typing or using a mouse and keep your hands and fingers relaxed. m Some computer users may develop discomfort in their hands, wrists, or arms after periods of intensive work without breaks. If you begin to develop chronic pain or discomfort in your hands, wrists, or arms, consult a qualified health specialist immediately. m Allow adequate workspace so that you can use your keyboard and mouse comfortably. Place papers or other items so you can view them easily while using your computer. A document stand may make reading papers more comfortable. m Eye muscles must work harder to focus on nearby objects. Occasionally focus your eyes on a distant object, and blink often while you work. m Clean your screen regularly. Keeping the screen clean helps reduce unwanted reflections. 33