The TIDY License:

  Copyright (c) 1998-2016 World Wide Web Consortium

  (Massachusetts Institute of Technology, European Research

  Consortium for Informatics and Mathematics, Keio University).

  All Rights Reserved.

  Additional contributions (c) 2001-2016 University of Toronto, Terry Teague,

  @geoffmcl, HTACG, and others.

  Contributing Author(s):

     Dave Raggett <[email protected]>

  The contributing author(s) would like to thank all those who

  helped with testing, bug fixes and suggestions for improvements.

  This wouldn't have been possible without your help.

  COPYRIGHT NOTICE:

  This software and documentation is provided "as is," and

  the copyright holders and contributing author(s) make no

  representations or warranties, express or implied, including

  but not limited to, warranties of merchantability or fitness

  for any particular purpose or that the use of the software or

  documentation will not infringe any third party patents,

  copyrights, trademarks or other rights.

  The copyright holders and contributing author(s) will not be held

  liable for any direct, indirect, special or consequential damages

  arising out of any use of the software or documentation, even if

  advised of the possibility of such damage.

  Permission is hereby granted to use, copy, modify, and distribute

  this source code, or portions hereof, documentation and executables,

  for any purpose, without fee, subject to the following restrictions:

  1. The origin of this source code must not be misrepresented.

  2. Altered versions must be plainly marked as such and must

     not be misrepresented as being the original source.

  3. This Copyright notice may not be removed or altered from any

     source or altered source distribution.

  The copyright holders and contributing author(s) specifically

  permit, without fee, and encourage the use of this source code

  as a component for supporting the Hypertext Markup Language in

  commercial products. If you use this source code in a product,

  acknowledgment is not required but would be appreciated.

ADDITIONAL README AND COPYRIGHT NOTICES PRESENT IN SOURCE

CODE FILES:

/* tidylib.c -- internal library definitions

  (c) 1998-2008 (W3C) MIT, ERCIM, Keio University

  See tidy.h for the copyright notice.

  Defines HTML Tidy API implemented by tidy library.

  Very rough initial cut for discussion purposes.

  Public interface is const-correct and doesn't explicitly depend

  on any globals.  Thus, thread-safety may be introduced w/out

  changing the interface.

  Looking ahead to a C++ wrapper, C functions always pass

  this-equivalent as 1st arg.

  Created 2001-05-20 by Charles Reitzel

*/

This copyright header is present in all TIDY source code files. It always

references the file tidy.h as the location of the COPYRIGHT and LICENSE

information.

The copyright start and end years vary from file to file.