Where are the configuration files for the panel

[Jean Raymond Chauviere <Jean-Raymond Chauviere cetelem fr>]

I'm looking for the configuration files (system and user) for the panel.
I suppose the panel has a file to remember what applets it has to launch.
A default one, for the first time and a user one depending on what have done the
user.

What are these files ?
JRC
thanks !

--
Nur der kleine Geist hält Ordnung, das Genie beherrscht das Chaos.
Seuls les petits esprits aiment l'ordre, le génie maitrîse le chaos.
(anonyme)