HP Vectra XW User Manual page 39

Make sure your arms and elbows
are relaxed and loose, with your
upper arm perpendicular to the
floor or slightly forward (no more
than 30 degrees).
Keep your elbows close to your sides
(less than 20 degrees away from your
body).
2 Using Your Personal Workstation
Working in Comfort
Keep your forearms and hands
approximately parallel with the floor.
(Elbows bent between 70 and 115
degrees).
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