Windows 2.03
Windows 2.0 is a 16-bit GUI-based operating environment that was developed by Microsoft and released on December 9, 1987. It is the successor to Windows 1.0. There were multiple names for this product's family members: Windows/286, Windows 386, and Windows 2.01 and Windows 2.1x.
Windows 2.0 allowed application windows to overlap each other, unlike its predecessor Windows 1.0, which could display only tiled windows. Windows 2.0 also introduced more sophisticated keyboard-shortcuts and the terminology of "Minimize" and "Maximize", as opposed to "Iconize" and "Zoom" in Windows 1.0. The basic window setup introduced here would last through Windows 3.1.
Text: wikipedia.