HP Compaq Presario,Presario 1515 Supplementary Manual page 18

Hp compaq presario,presario 1515: supplementary guide
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Adjust your chair height or keyboard height so that your shoulders are relaxed and
your elbows hang comfortably at your sides. Adjust your keyboard slope so that your
wrists are straight.
Position your elbows in a zone that is near the height of your keyboard's home row
(the row that includes the letters G and H). This position allows you to relax your
shoulders. If you have long upper arms, you may find you need to position your
elbows a bit below the height of home row in order to provide enough space under the
work surface for your knees and legs.
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Working at your computer for long periods can be a visually demanding task and may
cause your eyes to become irritated and fatigued. Therefore, you should give special
attention to vision care, including the following recommendations:
Give your eyes frequent breaks. Periodically look away from the monitor and focus
at a distant point. This may also be a good time to stretch, breathe deeply, and relax.
Turn your chair to the side to help determine if your
elbow height is near the height of your keyboard's
home row.

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