[phenixbb] An old (?) tutorial?

Greetings - On the public webpage, there used to be an outstanding text tutorial under the phenix.refine link (I think!) that described the attachment of prosthetic groups and such to protein, I think using NAG (or was it something else...). It had all the commands for inclusion in the .def. and of course I can't find it now on the public site. Should I look in the local docs of an old release? -Bryan