Toshiba LX800 - Manual (Page 133)

133 Hot Keys/TOSHIBA Cards
Hot key functions
5.375 x 8.375 ver 2.3
Display brightness
This hot key decreases the screen brightness.
This hot key increases the screen brightness.
Selecting this Card or pressing either hot key displays the
following options:
(Sample Image) Display brightness
Move the slider or press the appropriate hot key repeatedly
to decrease or increase the display brightness.