Hold the "Shift" key and use the Left or Up Arrow key to rotate counter-clockwise or use the Right or Down Arrow key to rotate clockwise. Normally, it rotates at 22.5° for each step. If the "Scroll Speed" slider in "Camera Properties" (Ctrl+Alt+C) is set all the way to the left, it 2.25°.
This rotates the "view", not the objects.
« Last Edit: December 11, 2017, 02:14:18 PM by John R »
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Windows 10 Pro, 64-bit