This file is indexed.

/usr/share/doc/simutrans/copyright is in simutrans 111.2.2-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Simutrans
Source: http://sourceforge.net/projects/simutrans

Files: *
Copyright:
  1997-2003, Hansjoerg Malthaner
  2004-2008, Simutrans Team <team64@simutrans.com>
  2008, Dwachs
  2008, Markus Pristovsek (prissi)
  2010, Knightly
License: other
 The Artistic License
 .
 Preamble
 .
 The intent of this document is to state the conditions under which a
 Package may be copied, such that the Copyright Holder maintains some
 semblance of artistic control over the development of the package,
 while giving the users of the package the right to use and distribute
 the Package in a more-or-less customary fashion, plus the right to make
 reasonable modifications.
 .
 Definitions:
 .
     * "Package" refers to the collection of files distributed by the
       Copyright Holder, and derivatives of that collection of files
       created through textual modification.
     * "Standard Version" refers to such a Package if it has not been
       modified, or has been modified in accordance with the wishes
       of the Copyright Holder.
     * "Copyright Holder" is whoever is named in the copyright or
       copyrights for the package.
     * "You" is you, if you're thinking about copying or distributing
       this Package.
     * "Reasonable copying fee" is whatever you can justify on the
       basis of media cost, duplication charges, time of people involved,
       and so on. (You will not be required to justify it to the
       Copyright Holder, but only to the computing community at large
       as a market that must bear the fee.)
     * "Freely Available" means that no fee is charged for the item
       itself, though there may be fees involved in handling the item.
       It also means that recipients of the item may redistribute it
       under the same conditions they received it.
 .
 1. You may make and give away verbatim copies of the source form of the
 Standard Version of this Package without restriction, provided that you
 duplicate all of the original copyright notices and associated disclaimers.
 .
 2. You may apply bug fixes, portability fixes and other modifications
 derived from the Public Domain or from the Copyright Holder. A Package
 modified in such a way shall still be considered the Standard Version.
 .
 3. You may otherwise modify your copy of this Package in any way, provided
 that you insert a prominent notice in each changed file stating how and
 when you changed that file, and provided that you do at least ONE of the
 following:
 .
     a) place your modifications in the Public Domain or otherwise make them
     Freely Available, such as by posting said modifications to Usenet or
     an equivalent medium, or placing the modifications on a major archive
     site such as ftp.uu.net, or by allowing the Copyright Holder to include
     your modifications in the Standard Version of the Package.
 .
     b) use the modified Package only within your corporation or
     organization.
 .
     c) rename any non-standard executables so the names do not conflict
     with standard executables, which must also be provided, and provide
     a separate manual page for each non-standard executable that clearly
     documents how it differs from the Standard Version.
 .
     d) make other distribution arrangements with the Copyright Holder.
 .
 4. You may distribute the programs of this Package in object code or
 executable form, provided that you do at least ONE of the following:
 .
     a) distribute a Standard Version of the executables and library files,
     together with instructions (in the manual page or equivalent) on where
     to get the Standard Version.
 .
     b) accompany the distribution with the machine-readable source of
     the Package with your modifications.
 .
     c) accompany any non-standard executables with their corresponding
     Standard Version executables, giving the non-standard executables
     non-standard names, and clearly documenting the differences in manual
     pages (or equivalent), together with instructions on where to get
     the Standard Version.
 .
     d) make other distribution arrangements with the Copyright Holder.
 .
 5. You may charge a reasonable copying fee for any distribution of this
 Package. You may charge any fee you choose for support of this Package.
 You may not charge a fee for this Package itself. However,
 you may distribute this Package in aggregate with other (possibly
 commercial) programs as part of a larger (possibly commercial) software
 distribution provided that you do not advertise this Package as a
 product of your own.
 .
 6. The scripts and library files supplied as input to or produced as
 output from the programs of this Package do not automatically fall
 under the copyright of this Package, but belong to whomever generated
 them, and may be sold commercially, and may be aggregated with this
 Package.
 .
 7. C or perl subroutines supplied by you and linked into this Package
 shall not be considered part of this Package.
 .
 8. The name of the Copyright Holder may not be used to endorse or promote
 products derived from this software without specific prior written
 permission.
 .
 9. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
 IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 .
 The End

Files: simutrans/font/m+10r.bdf
Copyright: © 2002-2006, M+ FONTS PROJECT
License: other
 These fonts are free softwares.
 Unlimited permission is granted to use, copy, and distribute it, with or
 without modification, either commercially and noncommercially.
 THESE FONTS ARE PROVIDED "AS IS" WITHOUT WARRANTY.

Files: utils/dr_rdgif.c
Copyright: 1991-1992, Thomas G. Lane
License: other
 This file is part of the Independent JPEG Group's software.
 For conditions of distribution and use, see the accompanying README file.
 .
 This file contains routines to read input images in GIF format.
 .
 These routines may need modification for non-Unix environments or
 specialized applications.  As they stand, they assume input from
 an ordinary stdio stream.  They further assume that reading begins
 at the start of the file; input_init may need work if the
 user interface has already read some data (e.g., to determine that
 the file is indeed GIF format).
 .
 These routines are invoked via the methods get_input_row
 and input_init/term.
 .
 This code is loosely based on giftoppm from the PBMPLUS distribution
 of Feb. 1991.  That file contains the following copyright notice:
 +-------------------------------------------------------------------+
 | Copyright 1990, David Koblas.                                     |
 |   Permission to use, copy, modify, and distribute this software   |
 |   and its documentation for any purpose and without fee is hereby |
 |   granted, provided that the above copyright notice appear in all |
 |   copies and that both that copyright notice and this permission  |
 |   notice appear in supporting documentation.  This software is    |
 |   provided "as is" without express or implied warranty.           |
 +-------------------------------------------------------------------+
 .
 We are also required to state that
    "The Graphics Interchange Format(c) is the Copyright property of
    CompuServe Incorporated. GIF(sm) is a Service Mark property of
    CompuServe Incorporated."
 .
 The code seems to be a modified version of jrdgif.c from libjpeg:
 ftp://zeus.etsimo.uniovi.es/pub/graphics/Image/jpeg/jpegsrc.v4.tar.gz
 The relevant part of the README mentioned above is included here:
 .
 This software is copyright (C) 1991, 1992, Thomas G. Lane.
 All Rights Reserved except as specified below.
 .
 Permission is hereby granted to use, copy, modify, and distribute this
 software (or portions thereof) for any purpose, without fee, subject to these
 conditions:
 (1) If any part of the source code for this software is distributed, then this
 README file must be included, with this copyright and no-warranty notice
 unaltered; and any additions, deletions, or changes to the original files
 must be clearly indicated in accompanying documentation.
 (2) If only executable code is distributed, then the accompanying
 documentation must state that "this software is based in part on the work of
 the Independent JPEG Group".
 (3) Permission for use of this software is granted only if the user accepts
 full responsibility for any undesirable consequences; the authors accept
 NO LIABILITY for damages of any kind.
 .
 Permission is NOT granted for the use of any IJG author's name or company name
 in advertising or publicity relating to this software or products derived from
 it.  This software may be referred to only as "the Independent JPEG Group's
 software".
 .
 We specifically permit and encourage the use of this software as the basis of
 commercial products, provided that all warranty or liability claims are
 assumed by the product vendor.

Files: debian/*
Copyright: 2008-2012, Ansgar Burchardt <ansgar@debian.org>
License: other
 The Debian packaging is released under the same terms as Simutrans itself.