Samsung SyncMaster 750B Owner's Manual page 56

Rotate to 270 : Display will get rotated to 270 degree from the current angle of
Rotation.
Hot key : Hot Keys are available by default and can be changed by user.
It can be assigned by user directly with keyboard after changing the existing
HotKey . User can create the hot key with the combination of Shift, Ctrl, Alt and
general keys. In case only general key is pressed, it will be assigned in the form of
Alt+general key.
Help : It shows the HELP of Auto Rotation program.
About : It shows the version and copyright of Auto Rotation program.
Exit : It exits from Auto Rotation program.