Sony PCG-705 - Manual (Page 143)

Light On Off
Num Lock Turns on when the
number keys area in the
numeric keypad are
active. Turns off when the
alphanumeric characters
keys in the keypad area are
active.
Caps Lock Turns on when the letters
appear in uppercase as
you type.
The Shift key lowers the
case of typed letters when
Caps Lock is on. Turns off when letters
appear in lower case as you
type (unless you hold down
the Shift key).
Scroll
Lock Turns on when the screen
scrolls differently. (Exactly
how it scrolls depends on
the specific application. It
has no effect in many
applications.) Turns off when information
moves across the display
normally.
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