title: How to avoid network graph nodes overlapping?
body: <p>I was using Visjs and displaying rectanglar nodes with text. Some of the nodes can have a couple of lines of text so I added a heuristic algorithm to work out roughly where the line breaks should go to avoid very wide, single line chunks of text in very wide but very short nodes.</p>
  
  <p>The trouble is, even with physics turned on, I still get overlapping nodes.</p>
  
  <p>Is it possible to tell the layout engine that, under no circumstances (or physics models), should any two nodes overlap?</p>