Copyright for docbook-ebnf source package in Xenial

This package was debianized by Yann Dirson  in
April 2002. It is currently maintained by
Daniel Leidert  as part of the Debian XML/SGML group.

Download location:
  http://www.oasis-open.org/docbook/xml/ebnf/

Upstream Author:
  
  Norman Walsh 

Copyright:

  Copyright (C) 2000, 2001, 2002, 2003, 2004 Organization for the Advancement
  of Structured Information Standards (OASIS).

License and warranty:

  Permission to use, copy, modify and distribute the DocBook EBNF
  Module and its accompanying documentation for any purpose and
  without fee is hereby granted in perpetuity, provided that the
  above copyright notice and this paragraph appear in all copies.
  The copyright holders make no representation about the
  suitability of the DTD for any purpose.  It is provided "as is"
  without expressed or implied warranty.

  If you modify the DocBook EBNF Module in any way, label your DTD
  as a variant of DocBook.  See the maintenance documentation for
  more information.

  Please direct all questions, bug reports, or suggestions for 
  changes to the docbook@lists.oasis-open.org mailing list. For more
  information, see http://www.oasis-open.org/docbook/.