This is the Debian prepackaged version of GNU wdiff, a program to compare two files word by word. GNU wdiff was written by François Pinard . This package was put together by Santiago Vila , from sources obtained from: http://ftp.gnu.org/gnu/wdiff/wdiff-1.2.2.tar.gz The changes were fairly minimal, and consisted of adding various debian/* files to the distribution. GNU wdiff is Copyright (C) 1992, 1997, 1998, 1999, 2009, 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . On Debian systems, the complete text of the GNU General Public License can be found in `/usr/share/common-licenses/GPL'. GNU wdiff manual is Copyright (C) 1992, 1994, 1997, 1998, 1999, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions, except that this permission notice may be stated in a translation approved by the Foundation.