Furuno GP-1670 Operator's Manual page 11

Open Source Acknowledgement
This product makes use of the following open source software:
FreeType (www.freetype.org)
Portions of this software are copyright ©2009 The FreeType Project
(www.freetype.org). All rights reserved.
libpng (http://www.libpng.org/)
This software is based in part on the work of the Independent JPEG Group.
libjpeg (http://www.ijg.org/)
We would like to thank each developer of the above-mentioned open
source software for their great contribution to the open source community.
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