EUROCOM 3100-B Mobile Cinema User Manual page 12

Lighting
Proper lighting and comfortable display viewing angle can reduce eye strain and
muscle fatigue in your neck and shoulders.
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Position the display to avoid glare or reflections from overhead lighting or
outside sources of light.
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Keep the display screen clean and set the brightness and contrast to levels that
allow you to see the screen clearly.
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Position the display directly in front of you at a comfortable viewing distance.
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Adjust the display viewing angle to find the best position.
In addition, continuous concentration on computing work can result in discomfort
and injury. Remember to:
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Alter your posture frequently.
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Stretch and exercise your body several times a day.
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Take periodic breaks when you work at the computer for long periods of time.
Frequent and short breaks are of greater benefit than fewer and longer breaks.