title: How do I merge call and caller graph in doxygen?
body: <p>I have both <code>CALL_GRAPH</code> and <code>CALLER_GRAPH</code> set to <code>YES</code>, and doxygen happily generates both call and caller graph for me, however is there a command or trick to merge these two graphs to a single "flow" graph?</p>
  
  <p>That is, instead of <code>a-&gt;B</code> and <code>B-&gt;c</code> how do I get <code>a-&gt;B-&gt;c</code>?</p>