Sony VGN-SZ300 - Manual (Page 18)

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Getting Started
Scroll lock
Press the Scr Lk key to change how you scroll the display. Normal scrolling resumes when the Scroll lock
indicator is off. The Scr Lk key functions differently depending on the program you are using and does not work
with all programs.
Bluetooth technology *
Illuminates when the WIRELESS switch is set to ON and Bluetooth technology is enabled.
WIRELESS LAN Illuminates when the wireless LAN function is running.
WIRELESS WAN * Illuminates when the wireless WAN function is enabled.
* On selected models only.
Indicator Functions