HP Vectra VE 5/series 2 User Manual page 34

Do not tilt your head forward by
more than 15 degrees, and try not to
turn your head toward the side.
Make sure frequently
used equipment is within
easy reaching distance
from your body. For
example, if you are
primarily using the
keyboard, place it directly
in front of you, not to the
side. If you are primarily
using the mouse, place it
in front of your hand or
arm.
If you are using both a
mouse and a keyboard,
place them both at the
same work surface
height.
Adjust your seat height, work surface
or both to position the surface at
approximately elbow height.
Remember to occasionally shift position and move your body. Keeping your body "locked"
in one position for a long period of time is unnatural and stressful.
Place your display so that the top of
the screen is at or slightly below eye
level (but no more than 15 degrees).
If after adjusting your chair you
cannot rest your feet comfortably
on the ground, use a footrest,
preferably adjustable in height
and angle.
If a wrist rest
is used, the
height should
be flush with
the front edge
of the
keyboard.
Make sure there
is sufficient
room under the
work surface for
your legs.