User's Manual
Work
in a
relaxed,
natural,
upright
position
and
let
the
chair
support
you.
Your
elbows
should
be
near
your
body
and
level
with
or
slightly
lower
than
the
keyboard
so
your
hands
rest
lightly
on
the
keys.
To
help
you
keep
your
wrists
straight,
the
slope
of
the
keyboard
should
be
no
more
than
25
degrees.
Try
not
to
hit
the
keys
too
hard;
using
too
much
force
creates
tension
in
your
hands.
Also
leave
enough
room
on
your
work
surface
so
you
can
freely
move
the
mouse
(or
other
pointing
device),
and
be
sure
to
rest
your
hands
occasionally.
Varying Your Posture and Movements
While
sitting
at
the
computer,
try
to
vary
your
posture
and
movements.
Your
seat
and
backrest
should
be
wide
enough
and
there
should
be
enough
room
under
your
desk
so
that
you
can
sit
in
a
variety
of
positions
throughout
the
day.
Be
sure
to
occasionally
stop
working
at
your
computer
and
perform
other
tasks.
Also
take
periodic
breaks;
stand
up,
stretch,
and
move
around.
Lighting the Room
While
it is
important
to
have
adequate
lighting
in
your
work
area,
make
sure
it
is
not
too
bright.
When
a
light
source
is
very
bright,
your
eyes
get
tired
by
having
to
continually
readjust
between
the
relative
dimness
of
the
screen
and
the
bright
surroundings.
It
is
best
to
control
the
amount
of
daylight
that
enters
the
room
and
keep
bright
light
sources
out
of
your
field
of
vision
when
you
are
looking
at
the
screen.
Using Your Computer
3-3