Sony PCG-XG28 Primary User Manual page 17

This section describes how to start using your computer and how to use
your computer's internal and external devices, such as the touchpad,
floppy disk drive, and DVD-ROM
You will be using your notebook computer as a portable device in a variety of
environments. Whenever possible, you should attempt to apply the following
ergonomic considerations to both stationary and portable environments.
Arms at desk
level
Wrists relaxed
and flat
Position of your computer – Place the computer directly in front of
you as you work. Keep your forearms horizontal, with your wrists in
*
drive.
Computer positioned
directly in front of you