NewsLink: A famous part of MS DOS, the program that made Bill Gates, is finally being retired

Before Microsoft had Office, before it had Windows, it had an operating system called MS DOS.
MS DOS was a command-line operating system, meaning you had to memorize a lot of commands and type them into the computer to get it to do things like show you a list of files...Read More
I used DOS when I first went online. Yes. Yes, I am old. Lol
Which part of MS-DoS made Bill Gates?