The orientation of the text, which can be either angle direction or screen-oriented. Not supported by 3D scenes. Optional specification of whether text should follow the placement angle direction even if it means being rendered upside-down, or whether text should be flipped through 180 degrees to keep it screen-oriented. This setting will take effect whenever the feature geometry determines that the text is angled upside-down, or if the map is rotated within the screen to make the text upside-down (with respect to the screen). The default is LabelTextOrientation.Automatic, which is interpreted as LabelTextOrientation.Screen.