Attack accuracy, ATA; hit percentages

[Mirinee]

I have some questions about the game mechanics.

Just what is the attack accuracy? The most easily noticeable thing about it is that you need it to be high enough to be able to use certain weapons, and, I'm also guessing that it is related to your weapon hit percentage? I know that it is unrelated with how much damage you deal (that's ATP).

How does that work quantitatively? How do you check for your overall hit percentage? Is it possible to get 100% hit just with high ATA? How does a weapon with hit percentage work?

Another thing is, how does ATA relate to magical attacks? Although how much damage done by a physical and magical attack are governed by separate stats (ATP, MST respectively), I would assume that the hit % of physical and magic attacks are the same. Am I close?

Thanks for any help.