title: What is the C# Node class?
body: <p>I'm (trying to) port the ChipmunkSharp C# physics library to Xojo. C# is not a language I am very familiar with.</p>
  
  <p>The port is going OK but I came across a method with the following signature:</p>
  
  <pre><code>public static float bbTreeMergedArea2(Node node, float l, float b, float r, float t)
  {
  }
  </code></pre>
  
  <p>Is <code>Node</code> a native C# class or datatype as I can't find a definition for it in the physics library I'm trying to code?</p>