New to KI, got it because of the sale. Reading your guide, wondering what "shadow OK" means? It's used in the context of linkers or openers or enders, but I don't know what OK is abbreviating?
It just means "also applies to the shadow version of this move". For example, a damage ender could be the normal version or the shadow version, so I'd list it as "Tiger Fury (shadow OK)". You'll also see "air OK" elsewhere, which means "this move can also be done in the air".