title: Access INSERT/Block content in DXF with ezdxf
body: <p>I'm trying to draw the content of a DXF file to an image, using python 2.7 and the ezdxf module.</p>
  
  <p>I achieve to read and draw LINE, POLYLINE, CIRCLE, but I don't know what to do with the INSERT element.
  I suppose this INSERT element (or the related block) contains other elements, LINE, POLYLINE and so on ... Right ?</p>
  
  <p>Here is how i access basics DXF elements : </p>
  
  <pre><code>dwg = ezdxf.readfile(filename)
  modelspace = dwg.modelspace()
  for e in modelspace:
     analyseElement(e)
  
  def analyseElement(e):
     if e.dxftype() == 'LINE':
         print("DXF LINE FOUND:")
         p1=e.dxf.start
         p2=e.dxf.end
        [...]
  </code></pre>
  
  <p>Can I hope to explore and extract basics elements from the INSERT contents ?
  Thank you all !</p>