Open sourcing MS-DOS 4.0

Discussion 4 days ago [0] (17 points, 6 comments), or [1](15 points)<p>[0]: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=40163044">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=40163044</a> [1]: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=40163967">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=40163967</a>