I doubt there was a secondary command window. I think the OP uses the term "command prompt window" loosely to refer to either {what we call a "command prompt window"} or {a Windows console window opened for a console program}.
I doubt there was a secondary command window. I think the OP uses the term "command prompt window" loosely to refer to either {what we call a "command prompt window"} or {a Windows console window opened for a console program}.