Toshiba Portege Z20-B Series - Volume Control; Zoom (Display Resolution)

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TOSHIBA Function Keys
Functions
5.375 x 8.375 ver 2.3
Volume control
Zoom (Display resolution)
This TOSHIBA Function key decreases the speaker
volume.
This TOSHIBA Function key increases the speaker
volume.
Fn+ [Space bar]
This TOSHIBA Function key switches screen
resolution.
Cycle through the screen resolutions, and then select
the desired resolution.