[GRASS-dev] authoritative source of doc for grass python functions

[Moritz Lennert]

What is the current authoritative source of documentation for the grass 
python functions except for the source code itself ?

Is it

http://download.osgeo.org/grass/grass6_progman/pythonlib.html
or
http://trac.osgeo.org/grass/browser/grass/tags/release_20090609_grass_6_4_0RC5/lib/python/README.txt
(for someone using 6.4RC5)
or
something else ?

Moritz