Guppi Manual/API

Hi all,

This is the first time I'm looking at guppi. I'd like to integrate it
into a graph application. I was unable to find a manual, API reference,
tutorial or examples. Can somebody please point me to a good reference?

Oh, I'd like to link directly to guppi without the need of bonobo or any
other gnome stuff.

I use Gnome but I'd not like users of my software to install a lot of
software just because of the graphing capabilities. :)

Best regards,

Paulo