Copyright (c) 1993-1994 Christopher G. Demetriou
Copyright (c) 1997-2002 Makoto Matsumoto and Takuji Nishimura
Copyright (c) 1998,2001 Manuel Bouyer.
Copyright (c) 1993-1994 Christopher G. Demetriou
Copyright (c) 1997-2002 Makoto Matsumoto and Takuji Nishimura
Copyright (c) 1998,2001 Manuel Bouyer.