Excel installing a captive Windows, a technical detail they could have hid, was instead played up to demo the windowing GUI, in a better implementation of shareware than nearly anything that came after. This ingenious decision really ought to be more widely known and celebrated, but seems to have fallen out of the abbreviated narrative around Windows' (or Excel's) history, and it takes specialized sources like this one, or books by Excel gurus [1] to talk more about this fact.<p>[1] <a href="https://books.google.com/books?id=3Uz7CAAAQBAJ&pg=PA8&lpg=PA8" rel="nofollow">https://books.google.com/books?id=3Uz7CAAAQBAJ&pg=PA8&lpg=PA...</a>