auto-complete.el documentation

[Seldon]

Hi,  I started using auto-complete.el in Emacs and I like it very much.

I would like to understand this package's internals, but I didn't found 
much documentation on the Internet, other than the Emacswiki page and 
the source file' documentation. Do you know about some useful resource, 
or the only way is to study the source code ?

Thanks in advance.
--
Seldon

"L'immaginazione e' piu' importante della conoscenza"
Alberto Unapietra