diff -r 18f2d30eddbe -r ac4e52a91d5d src/internet/model/tcp-l4-protocol.cc
--- a/src/internet/model/tcp-l4-protocol.cc	Wed Jul 03 21:43:05 2013 +0200
+++ b/src/internet/model/tcp-l4-protocol.cc	Wed Jul 03 14:43:10 2013 -0700
@@ -612,7 +612,8 @@
 
   TcpHeader outgoingHeader = outgoing;
   outgoingHeader.SetLength (5); //header length in units of 32bit words
-  /* outgoingHeader.SetUrgentPointer (0); //XXX */
+  /** \todo UrgentPointer */
+  /* outgoingHeader.SetUrgentPointer (0); */
   if(Node::ChecksumEnabled ())
     {
       outgoingHeader.EnableChecksums ();
@@ -663,7 +664,8 @@
     }
   TcpHeader outgoingHeader = outgoing;
   outgoingHeader.SetLength (5); //header length in units of 32bit words
-  /* outgoingHeader.SetUrgentPointer (0); //XXX */
+  /** \todo UrgentPointer */
+  /* outgoingHeader.SetUrgentPointer (0); */
   if(Node::ChecksumEnabled ())
     {
       outgoingHeader.EnableChecksums ();