Squadron roundel of <a href="https://en.wikipedia.org/wiki/No._28_Squadron_RAF" class="extiw" title="w:No. 28 Squadron RAF">No. 28 Squadron Royal Air Force</a> created in Inkscape
<a href="//commons.wikimedia.org/wiki/User:De728631" title="User:De728631">De728631</a>
This  <a href="https://en.wikipedia.org/wiki/Vector_images" class="extiw" title="w:Vector images">vector image</a> was created with <a href="https://en.wikipedia.org/wiki/Inkscape" class="extiw" title="w:Inkscape">Inkscape</a> .