Toshiba Satellite 2800-S201 User Guide - Page 33

Getting Started 33 Selecting a place to work Whichever type you choose, use the following guidelines to adjust your chair for maximum computing comfort.
Position your chair so that the keyboard is at or slightly below the level of your elbow. You should be able to type comfortably with your shoulders relaxed and your forearms parallel to the floor. If you are using a conventional chair:
Your knees should be slightly higher than your hips. If necessary, use a footrest to raise the level of your knees and ease the pressure on the back of your thighs.
Adjust the back of your chair so that it supports the lower curve of your spine. If necessary, use a cushion to provide extra back support. Lower-back-support cushions are available at many office supply stores.
Sit with your back straight so that your knees, hips, and elbows form approximately 90-degree angles when you work. Do not slump forward or lean back too far. Lighting Proper lighting can improve the visibility of the display and reduce eyestrain.
Position the display panel or external monitor so that sunlight or bright indoor lighting does not reflect off the screen. Use tinted windows or shades to reduce glare.
Avoid placing your computer in front of a bright light that could shine directly in your eyes.
If possible, use soft, indirect lighting in your computer work area. Part I: Getting to Know Your Computer