diff --git a/trunk/paradiseo-mo/src/explorer/moNeighborhoodExplorer.h b/trunk/paradiseo-mo/src/explorer/moNeighborhoodExplorer.h
index 369cd5cdd..7f9781359 100644
--- a/trunk/paradiseo-mo/src/explorer/moNeighborhoodExplorer.h
+++ b/trunk/paradiseo-mo/src/explorer/moNeighborhoodExplorer.h
@@ -118,11 +118,23 @@ public:
     }
 
 protected:
+  // default class for the empty constructor
     moDummyNeighborhood<Neighbor> dummyNeighborhood;
+
+  // default class for the empty constructor
     moDummyEval<Neighbor> dummyEval;
+
+  // the neighborhood which is explored
     Neighborhood & neighborhood;
+
+  // evaluation of a neighbor
     moEval<Neighbor>& eval;
+
+  // flag : true a the neighbor is accepted and the movement is made
     bool isMoved;
+
+  // the current neighbor of the exploration : common features of algorithm
+    Neighbor currentNeighbor
 };
 
 #endif
diff --git a/trunk/paradiseo-mo/src/explorer/moSimpleHCexplorer.h b/trunk/paradiseo-mo/src/explorer/moSimpleHCexplorer.h
index df934cb9a..40edfece5 100644
--- a/trunk/paradiseo-mo/src/explorer/moSimpleHCexplorer.h
+++ b/trunk/paradiseo-mo/src/explorer/moSimpleHCexplorer.h
@@ -170,7 +170,7 @@ private:
     moNeighborComparator<Neighbor>& neighborComparator;
     moSolNeighborComparator<Neighbor>& solNeighborComparator;
 
-    //Pointer on the best and the current neighbor
+    // the best and the current neighbor
     Neighbor best;
     Neighbor current;