User blog comment:AidenArtorius/Prior-Evolution-Only Moves/@comment-4669534-20120502145942/@comment-4669534-20120503194800

I did a quick search and found this and this other thing, but I only skimmed them. I never looked these up myself, I tended to just learn by usage and mimicking prior usage to see what things did. As such, I don't really know where to find centralized help; Help Wiki didn't appear to have much on the subject, although there should be something there.