Thanks, Panchdara,
actually I can't think of having imported the text from elsewhere but I cannot 100% exclude. If you are saying it is impossible to
add Rich Text from within QCad inadvertently, it must have been so.
I remember that I clicked on the "A"-Icon and typed in Text. What I did was mirroring the text layer at some point in time inbetween and then continued adding text.
But so what, Husky also pointed out a way to replace the \C7; entries. I did it the old fashioned way, using "vi" in a oneliner command rather than clicking