So, I'm doing a (yet another) re-read, and just finished EotW. I have a few questions about the ending that have almost assuredly been answered elsewhere, but I am too lazy to look. So,

#1- How did Aginor and Balthalmel gain access to the Green Man's Garden? They said they followed Mat there, Shadar Logoth dagger etc., but wasn't need required to access the area? Or was the Garden a pocket/bubble universe thing that could be accessed through the OP/TP?

#2- How did Aginor manage to burn himself to ash? Deus ex machine, or is there an actual reason?

#3- The Seal. Weren't the 7 Seals held in the White Tower until the Trolloc Wars? How did one end up in the Eye of the World? Acording to the Green Man it was created in the first days of the Breaking. So I guess the White Tower just, never had the seals?

Anyways, as I said, I'm sure these are answered already, but, well, this board needs some love, so maybe this'll stir up something.

EDIT: Well, it's looking like I'm not going to get any responses, and yet, I remembered my last question.
#4- What was the Eye of the Worlds actual purpose? Or do we know?