Microsoft releases version 1.0 of the open-source Windows Terminal application following a year of development.

But Windows 1.0 was marketed as an upgrade for people already running MS-DOS — and, in fact, it ran on top of MS-DOS, so anybody who wanted Windows had to have MS-DOS installed first.

After nearly four decades, an ancient secret buried deep in Windows 1.0 has been discovered by an intrepid digital archeologist. It’s a simple Easter egg, but one which was most likely ...