| http://www.w3.org/ns/prov#value | - Hotkeys are keyboard shortcuts i.e. pressing certain keys at the same time performs a particular action.In this case, the likely culprit is graphics card hotkeys that allow you to rotate the screen 90 or 180 degrees by pressing CTRL and ALT and a Cursor/Arrow (left/right/up/down arrow) key all at the same time.Intel graphics cards are infamous for using this choice of hotkeys for screen rotation ?
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