I learned the ins and outs of Microsoft's dominant character-based OS, and wrote about it and the applications that ran on it, like WordPerfect, Textra, Lotus 1-2-3, and even MS Word on DOS.

Microsoft's version of MS-DOS 4.0 was originally released back in 1986 after a joint development with IBM for portions of the code, and a somewhat difficult relationship between the two at the ...

If you’ve used MS-DOS before then you’ll be right at home right away—if you haven’t, you’ll need to brush up on the commands (we’ve already mentioned a couple of them).