Copyright 2001-2004 Python Software Foundation.All rights reserved. Copyright 2000 BeOpen.com.All rights reserved. Copyright 1995-2000 Corporation for National Research Initiatives.All rights reserved. Copyright 1991-1995 Stichting Mathematisch Centrum.All rights reserved.
Copyright (c) 2001 Robert Kiesling. Copyright (c) 2002, 2003 David Merrill. The contents of this document are licensed under the GNU Free Documentation License. Copyright (C) 1999 JM Project All rights reserved.