Copyright O 1994-1996 Wolfram Schneider <[email protected]>, Berlin. Copyright O 1991, 1994, 1995, 1996, 1997 Wolfgang Solfrank. Copyright m 1998 Brian Somers <[email protected]>. Copyright m 1989 by Berkeley Softworks. Copyright O 1996 Ignatios Souvatzis. Copyright O 1992 Diomidis Spinellis. Copyright