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Did you know...

  • ...that the Gizmo theme that was present in Mac OS 8.5b6 originates from Copland as "Z Theme" and was intended for testing the theming service for both versions?
  • ...that Windows XP build 2223 had commented out code in its Business theme file that would allow the user to configure different colors based on its settings?
  • ...that early builds of Windows Me replaced the safe to shutdown screen with a blue screen due to the removal of real-mode MS-DOS?
  • ...that the Neptune project was a cancelled version of Windows that ought to bring a new user interface reminiscent of the Metro elements later introduced in Windows 8?
  • ...that Windows 1.0 and Windows 2.x have a hidden easter egg with a list of members of the Windows team?
  • ...that every Classic Mac OS version since Mac OS 7 renames the "Special" menu to a unique word beginning with S in beta builds for easy identification of such?

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MS-DOS (Microsoft Disk Operating System) is a monolithic singletasking operating system developed by Microsoft between 1980 and 2000 for x86-based personal computers. It was the de facto industry standard environment on the IBM PC and its clones, although it also shipped with other x86-based computers that were incompatible with IBM.

By default, MS-DOS is driven by a command line interface – the A> or C:\> prompt shown when the command processor is ready to accept input ultimately became one of the unofficial symbols of DOS. Several software vendors have developed programs that add a more friendly user interface to manage files and launch other programs. Microsoft itself included such a program, the MS-DOS Shell, with some versions of MS-DOS.

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