Samsung RL19PSUSQ - Manual (Page 10)

For Multimedia model (Option)
Multimedia model Audio Cable
Front
Menu button [ ]
Opens the OSD menu. Also use to exit the OSD menu or return
to the previous menu.
MagicBright button
[ ]
MagicBright is a new feature providing optimum viewing
environment depending on the contents of the image you are
watching. Currently six different modes are available: Custom,
Text, Internet, Game, Sport and Movie. Each mode has its own
pre-configured brightness value. You can easily select one of
six settings by simply pressing MagicBright control buttons.
1) Custom
Although the values are carefully chosen by our engineers,
the pre-configured values may not be comfortable to your
eyes depending on your taste.
If this is the case, adjust the Brightness and Contrast by
using the OSD menu.