Toshiba Toshubia Tecra R940 - Manual (Page 192)

192 Hot Keys/TOSHIBA Cards
Hot key functions
5.375 x 8.375 ver 2.3
Keyboard hot key functions
Fn + This hot key allows you to zoom out.
Fn + This hot key allows you to zoom in.
Fn + This hot key decreases the speaker volume.
Fn + This hot key increases the speaker volume.
Fn + This hot key switches screen resolution.