Windows

Windows of different shapes suggest camera lenses and offer views of the water-filled quarry.

It powered the PC revolution with its central processing units that went inside all Windows computers.

"Windows won't obscure the light of the aurora but, depending on street lights, it might be trickier."

"Windows were all shattered. Everyone seemed conscious and OK, but I only saw the scene for about 15 seconds."

Similarly, open-source alternatives are available for common software packages like Office and Windows, but while proponents say they are more transparent and accessible, none is as comprehensive or well known.