Going back in time:
https://www.computerhope.com/msdos.htm (link source Computer Hope)
I remember it from the days around the turn of the century, when I studied Microsoft NT4 server and the kernel.
In in our country hospitals and the transport sector had to roll out NT4 and MS offered official training.
Most of the then students were linux admins with years and years of experience.
I learned a lot during that frantic course, the certificate still hangs on the wall,
and I now wonder who of you still use the odd MS-DOS command from time to time,
like netstat -an given in from the command prompt for instance....
Anyone?
polonus