Samsung XE700T1A-A04US - Manual (Page 28)

28 Using the Slate PC
Using the Auto Screen Rotation Function
To disable the Auto Screen Rotation function
Press the Orientation Lock button. If the Orientation Lock function
is activated, the screen orientation does not change regardless of
the rotation of the computer.
To release the Orientation Lock function so that the screen
orientation is automatically changed, press the Orientation Lock
button again.
If the Auto Screen Rotation function is activated, the screen orientation automatically changes as the computer is rotated.