More than just looking like an OS 9 app, they boot your computer directly into the app (off a USB stick in my case). Supposedly their hardware diagnostic tools

More than just looking like an OS 9 app, they boot your computer directly into the app (off a USB stick in my case). Supposedly their hardware diagnostic tools also have the same look and feel. It's probably so they can code directly to the hardware without a messy OS in the way. I tried to ask the guy about the graph and what the quadrants meant but he claimed it was secret and wouldn't tell me what the axes represented (they were unlabeled). There was also a whole lot of numbers on the right hand side and he looked for a number in there but, again, wouldn't tell me which ones were important to their warranty program.