Copyright (c) 2008-2013. 
The PLM Team: Martin Quinson, Gérald Oster and others.
(see the git logs for the exact authorship of each file).


The PLM software was written internally by the team. This software is
distributed under the GNU general public license version 3 (GPLv3).

The pedagogical material distributed with the PLM is covered both by
the GPLv3 license (mainly for the included code) and by the CC-BY-SA
license (mainly for the other media files). But the exact boundary
here between the source code and the media is left as an exercise to
the reader, so this material is distributed under both licenses for
sake of simplicity.

The GPLv3 license can be found in the archive under the name
LICENSE-GPL-3. The CC-BY-SA license can be found online:
http://creativecommons.org/licenses/by-sa/3.0/


The whole artwork is free content, licenced under CC-BY-SA, GPL, LGPL
and/or CC0-public domain. Some parts were done by us, other parts were
borowed from free collections. The specific license and origin of each
files is listed below.


=========================================================================

The artwork we did ourselves is distributed under the CC-BY-SA license. 
 img/BuggleQuestBack.png
 img/BuggleQuestBETA.png
 img/log.png
 img/edit_leftwall.png
 img/edit_baggle.png
 img/edit_topwall.png
 img/lightbot_f1.png 
 img/lightbot_f2.png
 img/lightbot_noop.png
 img/world_arrays.svg
 img/world_bat.svg
 img/world_buggle.svg
 img/world_hanoi.png
 img/world_sorting.png

 img/btn-reset.png is a mashup of mine between btn-start.png (CC-BY-SA) and
 http://openiconlibrary.sourceforge.net/gallery2/?./Icons/actions/run-rebuild.png
 (LGPL-2.1). The result can be used under either licence.
 
 Several exercises provide screenshot of PLM itself to help the
 student. These images are naturally CC-BY-SA too.

=========================================================================

We borrowed the following icons, that are CC-BY-SA too:

* The bunny and egg in BuggleQuest universe come from:
  plm/universe/bugglequest/ui/egg.png     http://openclipart.org/detail/93979/
  plm/universe/bugglequest/ui/rabbit.png  http://openclipart.org/detail/23052/
* Buttons:
  img/btn-demo.png:       http://openiconlibrary.sourceforge.net/gallery2/?./Icons/actions/games-solve.png
  img/btn-switch-exo.png: http://openiconlibrary.sourceforge.net/gallery2/?./Icons/actions/code-class.png
  img/btn-debug-step.png: http://openiconlibrary.sourceforge.net/gallery2/?./Icons/actions/debug-step-instruction.png
  img/btn-debug.png       http://openiconlibrary.sourceforge.net/gallery2/?./Icons/actions/go-next-context.png
  img/btn-start.png       http://openiconlibrary.sourceforge.net/gallery2/?./Icons/actions/media-playback-start-8.png
  img/btn-stop.png        http://openiconlibrary.sourceforge.net/gallery2/?./Icons/actions/media-playback-stop-8.png
  img/btn-load-lesson.png http://openiconlibrary.sourceforge.net/gallery2/?./Icons/actions/address-book-new-3.png
  img/btn-switch-lesson.png http://apps.carleton.edu/campus/library/bridge_icons/
* light for lightbot:
  img/lightbot_light.png  http://openiconlibrary.sourceforge.net/gallery2/?./Icons/actions/help-hint.png
  img/world_lightbot.png  (same file)
=========================================================================

The following icons are LGPL:

* We borrowed several of them to the nuvola icon theme for KDE 3.x 
  img/btn-alert-off.png:   nuvola/32x32/actions/irkickoff.png 
  img/btn-alert-on.png:    nuvola/32x32/actions/irkickflash.png

  img/console_delete.png:  nuvola/22x22/actions/edit_remove.png
  img/console_add.png:     nuvola/22x22/actions/edit_add.png
  img/console_refresh.png: nuvola/22x22/actions/reload_page.png

  img/edit_colors.png:     nuvola/32x32/actions/colorize.png
  img/edit_text.png:       nuvola/32x32/apps/applixware.png

  img/lightbot_forward.png nuvola/32x32/actions/up.png
  img/lightbot_left.png    nuvola/32x32/actions/1leftarrow.png
  img/lightbot_right.png   nuvola/32x32/actions/1rightarrow.png
  img/lightbot_jump.png    nuvola/32x32/actions/2uparrow.png
  img/lightbot_light.png   nuvola/32x32/actions/ledyellow.png

  img/menu-locale.png:     nuvola/32x32/apps/locale.png

=========================================================================

The following images come from the LibreOffice icon set. They are thus
MPL-1.1 | GPL-3+ | LGPL-3+

  img/edit_lineadd.png     cmd/lc_insertrows.png
  img/edit_linedel.png     cmd/lc_deleterows.png
  img/edit_coladd.png      cmd/lc_insertcolumns.png
  img/edit_coldel.png      cmd/lc_deletecolumns.png
  
=========================================================================

The following logos are GPLv2:
 img/busyicon/*: (gnome) http://openiconlibrary.sourceforge.net/gallery2/?./Icons/animations/process-working.png

 img/world_turtle.png : stolen to the kturtle project, that is GPLv2+

=========================================================================

The logos of the programming languages are certainly free, even if I
didn't dig for their exact licence.

img/lang_java.png
img/lang_javascript.png 
img/lang_python.png
img/lang_ruby.png
img/lang_scala.png

=========================================================================

Public domain images (CC0 PD)

* img/focus_* These images were retrieved from http://openclipart.org/
              even if I didn't write down the exact URL for them.
* img/trophy.png         http://openclipart.org/detail/48937/trophy-by-sheikh_tuhin	     
* img/world_baseball.png http://openclipart.org/detail/76927/baseball2-by-shokunin

=========================================================================

The following images are believed to be free, even if I cannot
remember where they come from. We should maybe play safe and replace
them. But as you can see from the rest of the project, we are
better programmers than designers... You are welcome if you can help.

* src/lessons/sort/pancake/img/world_pancake.png 
  It was retrieved from 
  http://omgwtflols.deviantart.com/art/Pixel-Art-Pancakes-with-syrup-298700868
  It seems rather free, but the exact license is not known.
* img/world_lesson.png
  I cannot remember where it comes from. It looks very similar to the
  logo for education applications in KDE so I guess it's ok. And since
  I'm planning at removing the whole concept of lessons, it's probably
  not worth digging any further on this one.