Awesome application of graph theory visualization tools. Here are two articles introducing these tools and other free software for networks, graphs, and flowcharts:<p><a href="http:&#x2F;&#x2F;lwn.net&#x2F;Articles&#x2F;639998&#x2F;" rel="nofollow">http:&#x2F;&#x2F;lwn.net&#x2F;Articles&#x2F;639998&#x2F;</a><p><a href="http:&#x2F;&#x2F;lwn.net&#x2F;Articles&#x2F;640302&#x2F;" rel="nofollow">http:&#x2F;&#x2F;lwn.net&#x2F;Articles&#x2F;640302&#x2F;</a>