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Re:What have we lost? – Demo of exotic OSes (2021) [video] by lproven on Friday August 26, 2022 @05:06AM (#32604899)
No they weren't.

This is an urban myth of computing, and it needs to die.

CP/M commands did not accept command-line switches in any standard way. You are trying to "correct" people who are telling the real story by repeating a myth.

http://www.os2museum.com/wp/why-does-windows-really-use-back...

Re:What have we lost? – Demo of exotic OSes (2021) [video] by p_l on Friday August 26, 2022 @05:15AM (#32604959)
Ah, I seem to have been waylaid by some of the older mentions there - thanks for the link with mention of M-DOS. I was certain of DEC connections, but thought it came through CP/M and forgot to take into account PDP-10 history of Microsoft.