Kwai, the qdMin test editor is simply a test program of mine which, first and foremost, allows me to track down any bugs in minScript and fix them. It is just a convenient way of running simple minScript scripts. Nothing more.
The fact that you used qdMin to run one of my test scripts is good, but that is just the tip of the minScript iceberg!
If you wanted to learn how to code in minScript then studying these test scripts would be a good starting point.
If you've ever used LUA in an application or programmed with Java/Javascript/VBScript then you have used a script engine before and minScript is no different. It is intended primarily (though it has a lot of other potential uses) for those developers who are working on an application of their own and wish to embed a script language within their app.
Have you ever used MS Access and created VBA (Visual Basic for Applications) code modules? There you are. MS Access is an application which has been built with a scripting engine embedded within it. This script engine allows users of MS Access (MS Access developers) to create code modules which can perform all sorts of tasks. I used to code VBA modules to create dynamic reports in MS Access.
You can do the same thing with minScript. That is, you can create an application and embed minScript within it. This would allow your application's users to perhaps create scripts which your app would then compile and run (using minScript) to perform any kind of task you see fit to allow.
Perhaps you want to write your own web browser, but instead of embedding Google's Javascript engine within it (for example, if you didn't want to write your own) you instead choose to embed minScript within! This would then mean that your browser would run, not Javascript scripts, but minScript ones. Of course abandoning Javascript would probably be a monumental mistake for a new browser!
So far, only HexOR has been brave enough to integrate minScript into one of his applications before I've even finished the minScript user manual. Actually, he started the integration before I had even started the user manual!
Integrating minScript is not particularly difficult, though, like anything, there is a learning curve to negotiate.
If you're not really sure what a scripting engine is KCC, then you are probably not in need of one.