[..Quick and Dirty Operating System..]

Hmmm I'm just trying to remember that MSDOS was once QDOS. You could see how Bill Gates gives assurance to MITS the makers of ALTAIR 8080 that He and Paul were already developed a certain OS which was BASIC designed for ALTAIR 8080, knowing they didn't even have a single line of code about it. Because of the fact he lied, it helped... gaining big bucks from it.