THIRD-PARTY SOFTWARE NOTICES
Symmetry Explorer, Symmetry Mechanical and Symmetry Domer

These programs use the open-source components listed below. Their authors keep the copyright.
The full licence texts are in the folder Help\licenses (the same folder also holds this file),
and Help\licenses.html shows them in a browser.

Component                          Version       Used by                      Licence                       Full text
---------------------------------  ------------  ---------------------------  ----------------------------  ------------------------------
OpenTK (Core, Graphics,            4.8.2         Explorer, Mechanical, Domer  MIT; OpenEXR BSD licence for  opentk.txt
  Mathematics, Windowing)                                                       the half-precision type
OpenTK GLControl (OpenTK.WinForms) 4.0.0-pre.8   Explorer, Mechanical, Domer  MIT                           opentk-glcontrol.txt
GLFW (glfw3.dll)                   3.3.8         Explorer, Mechanical, Domer  zlib/libpng                   glfw.txt
QuestPDF                           2026.9.1      Mechanical, Domer            QuestPDF Community License    questpdf.txt
Components included in QuestPDF:                 Mechanical, Domer
  Skia, HarfBuzz, FreeType, qpdf, libjpeg-turbo, libpng, libwebp, Wuffs, zlib, Expat,
  libgrapheme, Lato font (and the build tools Emscripten SDK and Ninja)               questpdf\*.txt

Copyright notices
-----------------
OpenTK:            Copyright (c) 2006-2019 Stefanos Apostolopoulos for the Open Toolkit project.
OpenEXR (in OpenTK.Half): Copyright (c) 2002, Industrial Light & Magic, a division of Lucas Digital Ltd. LLC. All rights reserved.
OpenTK GLControl:  Copyright (c) 2006-2019 Stefanos Apostolopoulos for the Open Toolkit project; Copyright (c) 2024 Team OpenTK.
GLFW:              Copyright (c) 2002-2006 Marcus Geelnard; Copyright (c) 2006-2019 Camilla Löwy.
QuestPDF:          Copyright Marcin Ziąbek, QuestPDF contributors.
Skia:              Copyright (c) 2011 Google Inc. All rights reserved.
HarfBuzz:          Copyright © 2010-2022 Google, Inc., and the other holders listed in questpdf\harfbuzz.txt.
FreeType:          Portions of this software are copyright (c) The FreeType Project (www.freetype.org). All rights reserved.
qpdf:              the qpdf project (Apache License 2.0).
libjpeg-turbo:     Copyright (C) 2009-2023 D. R. Commander; Copyright (C) 2015 Viktor Szathmáry; copyright (C) 1991-2020 Thomas G. Lane, Guido Vollbeding.
                   This software is based in part on the work of the Independent JPEG Group.
libpng:            Copyright (c) 1995-2024 The PNG Reference Library Authors, and the other holders listed in questpdf\libpng.txt.
libwebp:           Copyright (c) 2010, Google Inc. All rights reserved.
Wuffs:             the Wuffs project (Apache License 2.0).
zlib:              (C) 1995-2024 Jean-loup Gailly and Mark Adler.
Expat:             Copyright (c) 1998-2000 Thai Open Source Software Center Ltd and Clark Cooper; Copyright (c) 2001-2022 Expat maintainers.
libgrapheme:       Copyright 2019-2025 Laslo Hunhold.
Lato font:         Copyright (c) 2010-2019, Łukasz Dziedzic, with Reserved Font Name Lato (SIL Open Font License 1.1).
Emscripten SDK:    Copyright (c) 2018 Emscripten authors.
Ninja:             the Ninja project (Apache License 2.0).

The programs run on Microsoft .NET 10 (Windows Desktop Runtime), installed separately and not distributed with them.