Actually, I have the CD. I got it for my '77 300D. It covers several
related models and years as well. It is not like a paper manual at
all, although it is based on the paper manual. Let me explain. It rums
on Windows ONLY. When started,  there is a multi-media Flash animation
that leads up to a series of menus by which you select your model &
year, then which component of the car you are concerned with. At the
conclusion of this you get to a PDF of the appropriate manual pages.
My problem with this is that you need to have access to a computer
next to your car (solution: print out the PDF). The other problem is
that the PDFs appear to be scanned in images of the original manual.
Thus the photographs are not as clear although the text is generally
fine. The real problem is things where you need fine detail like
electrical diagrams. I'd swap my CD for a printed manual if any of you
are interested,   ;-) .

Peter Hollings