add comments

examples/src/OpenDis7Examples/ExampleSimulationProgram.java

@@ -157,7 +157,7 @@ public class ExampleSimulationProgram // extends ChannelOpenDis7
                 
             // something happens between my simulation entities, la de da de da...
             System.out.println ("... My simulation just did something, no really...");
-            System.out.flush();
+            System.out.flush(); // make sure this arrives to user even if other threads somehow become deadlocked
             
             
             // make your reports: narrative code for CommentPdu here (set all to empty strings to avoid sending)
@@ -318,7 +318,7 @@ public class ExampleSimulationProgram // extends ChannelOpenDis7
 
         thisProgram.channelOpenDis7.setUpNetworkInterface();
         
-//        thisProgram.pduRecorder.setDescriptor (TRACE_PREFIX.replace("[","").replace("]","") + " pduRecorder");
+//      thisProgram.pduRecorder.setDescriptor (TRACE_PREFIX.replace("[","").replace("]","") + " pduRecorder"); // optional
 
         thisProgram.runSimulationLoops(); // ... your simulation execution code goes in there ...