http://xa63tpfoaqt3zru2ehxjjfbpadwj4ha6qsdvtcqtyr3b7hmt4iaq.b32.i2p/spec.html
The unencrypted zip archive may contain the following entries: headers.dat [used in: posts, private messages, metadata posts] Optionally contains headers that are not visible to those who cannot decrypt
the message page$n.dat [used in: posts, private messages] Page $n's contents page$n.cfg [used in: posts, private messages] Headers for page $n: Content-type, title, references, etc attach$n.dat [used in: posts, private messages] Attachment $n's contents attach$n.cfg [used in: posts, private messages]...