Denis Arnaud	<denis.arnaud@free.fr>:	world management
Fabrice Bellard	<bellard@email.enst.fr>:	3D rendering
Stephane Belmon	<belmon@email.enst.fr>:	network interface
Philippe Dax	<dax@inf.enst.fr>: 		project manager
Samuel Orzan	<orzan@email.enst.fr>:		world management
Lionel Ulmer	<ulmer@email.enst.fr>: 		the GUI under X11
