Microsoft shares (statically) the source code of MS-DOS 1.25 and 2.0 (GitHub)

A must look at? We will have to see that. MS DOS Source Code is now shared in Github:
https://github.com/microsoft/ms-dos
A piece of news (in PT) about this can be found here:
Microsoft partilha o código fonte do MS-DOS 1.25 e 2.0 no GitHub - Pplware