Anti <a href="https://en.wikipedia.org/wiki/Gnuplot" class="extiw" title="w:Gnuplot">Gnuplot</a> logo
for authorships, see File:<a href="//commons.wikimedia.org/wiki/File:Lissajous_small.svg" title="File:Lissajous small.svg">Lissajous small.svg</a>
2010-12-20
Simplified derivate from the drawing <a href="//commons.wikimedia.org/wiki/File:Lissajous_small.svg" title="File:Lissajous small.svg">Lissajous small.svg</a>