title: DXF File - Won't Open in Autodesk Viewer
body: <p>We're building a DXF exporter and from what I've read, this extremely simple file should be valid. We don't have any CAD tools to test with, so I'm very limited in my abilities to debug. This opens fine in <a href="https://gallery.proficad.com/tools/autocad-viewer.aspx" rel="nofollow">the Proficad online viewer</a> but I get an error from the <a href="https://360.autodesk.com/Viewer" rel="nofollow">Autodesk viewer</a>, saying "The drawing file is invalid and cannot be viewed".</p>
  
  <p>This is the file in its entirety. Any help is appreciated!</p>
  
  <pre><code>  0
  SECTION
    2
  ENTITIES
    0
  LWPOLYLINE
    90
  5
    70
  0
    43
  0.0
    10
  -8.75
    20
  -11.75
    30
  0.0
    10
  -8.75
    20
  11.75
    30
  0.0
    10
  8.75
    20
  11.75
    30
  0.0
    10
  8.75
    20
  -11.75
    30
  0.0
    10
  -8.75
    20
  -11.75
    30
  0.0
    0
  ENDSEC 
    0
  EOF
  </code></pre>