Samsung NP-Q1U - Q1U XP - A110 800 MHz Getting Started Manual page 36

Touch Sensor Buttons
You can run a function by lightly touching a Touch Sensor Button with your finger.
The Touch Sensor Buttons are optional and may not be provided depending on your
computer model.
If you touch this button,
the Easy Button Manager
appears in which you can
configure the User-Defined
UDF
Button function.
36
MENU
If you touch this button,
the MENU program will be
launched.
The menu program provides
a menu with the computer's
frequently used functions.
You can conveniently
configure the functions.
VOL-, VOL+
You can adjust the volume.