title: How to prevent edges in graphviz to overlap each other
body: <p>I have a graph I've created in graphviz, but the problem is that edges overlap each other (I have 5-7 nodes in each row), so it is hard to tell for each node which are the nodes it connects.</p>
  
  <p>How can I make the edges not to overlap each other? Have them cross each other is OK.</p>