title: Draw Network in R (control edge thickness plus non-overlapping edges)
body: <p>I need to draw a network with 5 nodes and 20 directed edges (an edge connecting each 2 nodes) using R, but I need two features to exist:</p>
  
  <ol>
  <li>To be able to control the thickness of each edge.</li>
  <li>The edges not to be overlapping (i.e.,the edge form A to B is not drawn over the edge from B to A)</li>
  </ol>
  
  <p>I've spent hours looking for a solution, and tried many packages, but there's always a problem.</p>
  
  <p>Can anybody suggest a solution please and provide a complete example as possible?</p>
  
  <p>Many Thanks in advance.</p>