Reordered main function to make it more tutorial-like

 - Added link to COLLADA's official website.
 - Added comments to distinguish coordinates related to camera from
   coordinates related to the 3D model.
 - Changed single line comments to the corresponding bracket.
 - Made reference to the CU Macky Auditorium on its position.

src/gov/nasa/worldwindx/examples/ColladaViewer.java

@@ -42,7 +42,7 @@
 import java.io.File;
 
 /**
- * Shows how to load COLLADA models.
+ * Shows how to load {@link <a href="https://www.khronos.org/collada/">COLLADA</a> 3D models.
  */
 public class ColladaViewer extends ApplicationTemplate {
 
@@ -83,23 +83,17 @@ protected void addColladaLayer(ColladaRoot colladaRoot) {
         }
     }
 
-    /**
-     * A <code>Thread</code> that loads a COLLADA file and displays it in an <code>AppFrame</code>.
-     */
+    // A <code>Thread</code> that loads a COLLADA file and displays it in an <code>AppFrame</code>.
     public static class WorkerThread extends Thread {
 
-        /**
-         * Indicates the source of the COLLADA file loaded by this thread. Initialized during construction.
-         */
+        // Indicates the source of the COLLADA file loaded by this thread. Initialized during construction.
         protected Object colladaSource;
-        /**
-         * Geographic position of the COLLADA model.
-         */
+
+        // Geographic position of the COLLADA model.
         protected Position position;
-        /**
-         * Indicates the <code>AppFrame</code> the COLLADA file content is displayed in. Initialized during
-         * construction.
-         */
+
+        // Indicates the <code>AppFrame</code> the COLLADA file content is displayed in. Initialized during
+        // construction.
         protected AppFrame appFrame;
 
         /**
@@ -137,17 +131,22 @@ public void run() {
             }
         }
     }
-
+    
     public static void main(String[] args) {
+
+        // Set camera position and pitch angle.
         Configuration.setValue(AVKey.INITIAL_LATITUDE, 40.028);
         Configuration.setValue(AVKey.INITIAL_LONGITUDE, -105.27284091410579);
         Configuration.setValue(AVKey.INITIAL_ALTITUDE, 4000);
         Configuration.setValue(AVKey.INITIAL_PITCH, 50);
-
+
+        // Set the application frame to update, a position for the model, and a path to the COLLADA file.
         final AppFrame af = (AppFrame) start("WorldWind COLLADA Viewer", AppFrame.class);
-
-        new WorkerThread(new File("testData/collada/cu_macky/CU Macky.dae"),
-                Position.fromDegrees(40.009993372683, -105.272774533734), af).start();
+        final Position MackyAuditoriumPosition = Position.fromDegrees(40.009993372683, -105.272774533734);
+        final File ColladaFile = new File("testData/collada/cu_macky/CU Macky.dae");
+
+        // Invoque the <code>Thread</code> to load the COLLADA model asynchronously.
+        new WorkerThread(ColladaFile, MackyAuditoriumPosition, af).start();
 
     }
 }