How to return multiple values from a Python function plugin?

Hi,

I've figured out how to create Python plugin functions for Gnumeric, and
some are even working ;-)

However, I need to return multiple values from a function (to be stored
in adjecent cells) but cannot find any reference on how to do that.
I did find a reference to a Python API - possibly outdated - which
shows cell access (http://www.bruunisejs.dk/PythonHacks/rstFiles/500%20Notes%20on%20spreadsheets%20etc.html#scripting-setup-in-gnumeric), but these functions seem to have disappeared.

Help!

John