- Copyright (C) 1997-2005 Ian Jackson <ian@davenant.greenend.org.uk>
- Copyright (C) 1999-2004 Tony Finch <dot@dotat.at> [1]
- Copyright (C) 1991 Massachusetts Institute of Technology [2]
+ Copyright (C) 1997-2000,2003,2006 Ian Jackson <ian@davenant.greenend.org.uk>
+ Copyright (C) 1999-2000,2003,2006 Tony Finch <dot@dotat.at> [1]
+ Copyright (C) 1991 Massachusetts Institute of Technology [2]