I dug around in my Korean Skies install, and actually found it! Once LZ mentioned it, I recalled mention of it somewhere back in the dark vault of my memory.
What started me was O-1 Driver's tips on how to use vehicle, tank, naval mines and bomb explosions in missions. I have been successful in using them against ships and vehicles, and then set out to have the bomb explosions destroy a target. The one I picked was rail_marshalling_small1.xml, and put a lot of bomb explosions on top of it. The bombs go off, the target looks really destroyed, but the goal remains at 100%. Even if I tell it that 5% of damage is enough.
So I copied the mission over, and placed a different facility in as the target (industrial_factory_small.xml) and the mission goal resolves as soon as I start it. Much more like what I expected with the rail yard which shows no results at all.
So, I just wanted to peek inside the files and see if I could see an obvious reason for the difference in behavior between the two targets, and thought a visualization of what the xml describes would be useful. I can now make a dupe set of the files and start eliminating variables till I find what remains, and as we all know from Sherlock, however improbable what remains might be, it must be the truth!
I also haven't tried other more nearly similar targets to see what results there are. That's kind of my next step.
Mostly I'm tinkering which might someday lead to understanding.
Tips are always welcome. Don't be afraid of insulting my intelligence. I understand computers pretty well, but the intricacies of how cfs3 is put together often elude me