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about Icons, ClipArts †
Some icons in this page are downloadable at ICONFINDER.
The "note" icon designed by Marco Martin is distributed with the LGPL licence,
the "warning" icon designed by Alexandre Moore with the GPL licence
and the "triangle" icon designed by Joseph North is distributed with the Creative Commons (Attribution-Noncommercial-Share Alike 3.0 Unported) licence.
Some clip arts used in this page are downloadable at Open Clip Art Library.
We deeply appreciate their superb works. With licence, they describe that "the actual clipart content on open clipart library is Public domain" in the web.