[Exim] Document translation and maintainance?

Recently some Japanese Exim users are interested in translating Exim
documents. So I just wonder how Philip maintains them. Does he use
some typesetting or other tools? Can we get the original files if any?

Thanks in advance.

--
"Free software is not for free."
Kaz Sasayama <Kaz.Sasayama@???>; Screen Name: kazssym
Hyper Linux Systems (Hypercore Software Design, Ltd.)
<URL:http://www.hypercore.co.jp/>