THE APPEARANCE OF A 5,838,889 A 11/1998 Booker USER INTERFACE 5,842,009 A 11/1998 Borovoy et 31. 5,855,006 A 12/1998 Huemoeller et a1.(75) Inventors: Julien Jalon, Paris (FR); Manuel 5,860,067 A 1/1999 Onda et a1. Colom, Paris (FR)