Display: Position the display to maintain a comfortable viewing distance of 510 mm to 760 mm (20 inches to30 inches). Avoid glare or reflections on the display from overhead lighting or outside sources of light. Keepthe display screen clean and set the brightness to levels that enable you to see the screen clearly. Press thebrightness control keys to adjust display brightness.Head position: Keep your head and neck in a comfortable and neutral (vertical, or upright) position.Chair: Use a chair that gives you good back support and seat height adjustment. Use chair adjustments tobest suit your comfort posture.Arm and hand position: If available, use chair arm rests or an area on your working surface to provideweight support for your arms. Keep your forearms, wrists, and hands in a relaxed and neutral (horizontal)position. Type with a soft touch without pounding the keys.Leg position: Keep your thighs parallel to the floor and your feet flat on the floor or on a footrest.82 M70c User Guide