Diagram for use in <a href="https://en.wikipedia.org/wiki/Template:Tracking_category" class="extiw" title="en:Template:Tracking category">en:Template:Tracking category</a>
<a href="//commons.wikimedia.org/wiki/User:WOSlinker" title="User:WOSlinker">WOSlinker</a>
2012-02-23
<span class="int-own-work" lang="en">Own work</span>