Spec: https://w3c.github.io/webdriver-bidi/#command-emulation-setScreenOrientationOverride WPT: https://wpt.fyi/results/webdriver/tests/bidi/emulation/set_screen_orientation_override?label=master&product=chrome%5Bexperimental%5D&product=firefox%5Bexperimental%5D&product=safari%5Bexperimental%5D&product=wpewebkit&aligned > The emulation.setScreenOrientationOverride command emulates screen orientation of the given top-level traversables or user contexts. Current override options: emulation.ScreenOrientationNatural = "portrait" / "landscape" emulation.ScreenOrientationType = "portrait-primary" / "portrait-secondary" / "landscape-primary" / "landscape-secondary" emulation.ScreenOrientation = { natural: emulation.ScreenOrientationNatural, type: emulation.ScreenOrientationType }