- Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
- Copyright (C) 1999-2000 Tony Finch <dot@dotat.at> [1]
- Copyright (C) 1991 Massachusetts Institute of Technology [2]
+ Copyright (C) 1997-2000,2003,2006,2014 Ian Jackson
+ Copyright (C) 2014 Mark Wooding
+ Copyright (C) 1999-2000,2003,2006 Tony Finch <dot@dotat.at> [1]
+ Copyright (C) 1991 Massachusetts Institute of Technology [2]