diff --git a/cmRtNet.c b/cmRtNet.c
index 960b4d5..1ecdfc2 100644
--- a/cmRtNet.c
+++ b/cmRtNet.c
@@ -608,13 +608,14 @@ cmRtNetRC_t  _cmRtNetSyncModeRecv( cmRtNet_t* p, const char* data, unsigned data
   return rc;
 }
 
+// This is called in the context of cmRtNetReceive().
 void _cmRtNetRecv( void* cbArg, const char* data, unsigned dataByteCnt, const struct sockaddr_in* fromAddr )
 {
   cmRtNet_t* p = (cmRtNet_t*)cbArg;
   
   if( _cmRtNetIsSyncModeMsg(data,dataByteCnt))
     _cmRtNetSyncModeRecv(p,data,dataByteCnt,fromAddr);
-  else
+  // else
     p->cbFunc(p->cbArg,data,dataByteCnt,fromAddr);
   
 }
@@ -707,6 +708,7 @@ cmRtNetRC_t cmRtNetReceive( cmRtNetH_t h )
   cmRtNetRC_t rc = kOkNetRC;
   cmRtNet_t*  p  = _cmRtNetHandleToPtr(h);
 
+  // Calling this function results in callbacks to _cmRtNetRecv() (above)
   if( cmUdpGetAvailData(p->udpH, NULL, NULL, NULL ) != kOkUdpRC )
   {
     cmErrMsg(&p->err,kUdpPortFailNetRC,"UDP port query failed.");
diff --git a/cmRtNet.h b/cmRtNet.h
index d29f53e..06bda20 100644
--- a/cmRtNet.h
+++ b/cmRtNet.h
@@ -65,7 +65,9 @@ extern "C" {
   cmRtNetRC_t cmRtNetDoSync( cmRtNetH_t h );
 
   // This function must be polled to receive incoming network messages
-  // via the callback funcion 'cbFunc' as passed to cmRtNetAlloc()
+  // via the callback funcion 'cbFunc' as passed to cmRtNetAlloc().
+  // Note that all messages received via 'cbFunc' will be prefixed with
+  // an cmRtNetMsg_t header (See cmRtSysMsg.h).
   cmRtNetRC_t cmRtNetReceive( cmRtNetH_t h );
 
   // Get an end point handle for use with cmRtNetSend.