I was thinking it worked in MS DOS after some point, but I was remembering more like Windows 95 era. I don't think it worked in MS DOS 6.x, because IIRC that's

I was thinking it worked in MS DOS after some point, but I was remembering more like Windows 95 era. I don't think it worked in MS DOS 6.x, because IIRC that's when I was using 4DOS. However, it doesn't work in Windows 10 CMD.EXE.