diff --git a/lemon/bfs.h b/lemon/bfs.h
--- a/lemon/bfs.h
+++ b/lemon/bfs.h
@@ -49,11 +49,11 @@
     ///arcs of the shortest paths.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     typedef typename Digraph::template NodeMap<typename Digraph::Arc> PredMap;
-    ///Instantiates a PredMap.
+    ///Instantiates a \c PredMap.
 
-    ///This function instantiates a PredMap.
+    ///This function instantiates a \ref PredMap.
     ///\param g is the digraph, to which we would like to define the
-    ///PredMap.
+    ///\ref PredMap.
     static PredMap *createPredMap(const Digraph &g)
     {
       return new PredMap(g);
@@ -64,11 +64,11 @@
     ///The type of the map that indicates which nodes are processed.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     typedef NullMap<typename Digraph::Node,bool> ProcessedMap;
-    ///Instantiates a ProcessedMap.
+    ///Instantiates a \c ProcessedMap.
 
-    ///This function instantiates a ProcessedMap.
+    ///This function instantiates a \ref ProcessedMap.
     ///\param g is the digraph, to which
-    ///we would like to define the ProcessedMap
+    ///we would like to define the \ref ProcessedMap
 #ifdef DOXYGEN
     static ProcessedMap *createProcessedMap(const Digraph &g)
 #else
@@ -83,11 +83,11 @@
     ///The type of the map that indicates which nodes are reached.
     ///It must meet the \ref concepts::ReadWriteMap "ReadWriteMap" concept.
     typedef typename Digraph::template NodeMap<bool> ReachedMap;
-    ///Instantiates a ReachedMap.
+    ///Instantiates a \c ReachedMap.
 
-    ///This function instantiates a ReachedMap.
+    ///This function instantiates a \ref ReachedMap.
     ///\param g is the digraph, to which
-    ///we would like to define the ReachedMap.
+    ///we would like to define the \ref ReachedMap.
     static ReachedMap *createReachedMap(const Digraph &g)
     {
       return new ReachedMap(g);
@@ -98,11 +98,11 @@
     ///The type of the map that stores the distances of the nodes.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     typedef typename Digraph::template NodeMap<int> DistMap;
-    ///Instantiates a DistMap.
+    ///Instantiates a \c DistMap.
 
-    ///This function instantiates a DistMap.
+    ///This function instantiates a \ref DistMap.
     ///\param g is the digraph, to which we would like to define the
-    ///DistMap.
+    ///\ref DistMap.
     static DistMap *createDistMap(const Digraph &g)
     {
       return new DistMap(g);
@@ -221,10 +221,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///PredMap type.
+    ///\c PredMap type.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///PredMap type.
+    ///\c PredMap type.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     template <class T>
     struct SetPredMap : public Bfs< Digraph, SetPredMapTraits<T> > {
@@ -241,10 +241,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///DistMap type.
+    ///\c DistMap type.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///DistMap type.
+    ///\c DistMap type.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     template <class T>
     struct SetDistMap : public Bfs< Digraph, SetDistMapTraits<T> > {
@@ -261,10 +261,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///ReachedMap type.
+    ///\c ReachedMap type.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///ReachedMap type.
+    ///\c ReachedMap type.
     ///It must meet the \ref concepts::ReadWriteMap "ReadWriteMap" concept.
     template <class T>
     struct SetReachedMap : public Bfs< Digraph, SetReachedMapTraits<T> > {
@@ -281,10 +281,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///ProcessedMap type.
+    ///\c ProcessedMap type.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///ProcessedMap type.
+    ///\c ProcessedMap type.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     template <class T>
     struct SetProcessedMap : public Bfs< Digraph, SetProcessedMapTraits<T> > {
@@ -300,10 +300,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>.
+    ///\c ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>.
+    ///\c ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>.
     ///If you don't set it explicitly, it will be automatically allocated.
     struct SetStandardProcessedMap :
       public Bfs< Digraph, SetStandardProcessedMapTraits > {
@@ -1194,9 +1194,9 @@
   ///
   /// This class defines the interface of the BfsVisit events, and
   /// it could be the base of a real visitor class.
-  template <typename _Digraph>
+  template <typename GR>
   struct BfsVisitor {
-    typedef _Digraph Digraph;
+    typedef GR Digraph;
     typedef typename Digraph::Arc Arc;
     typedef typename Digraph::Node Node;
     /// \brief Called for the source node(s) of the BFS.
@@ -1224,9 +1224,9 @@
     void examine(const Arc& arc) {}
   };
 #else
-  template <typename _Digraph>
+  template <typename GR>
   struct BfsVisitor {
-    typedef _Digraph Digraph;
+    typedef GR Digraph;
     typedef typename Digraph::Arc Arc;
     typedef typename Digraph::Node Node;
     void start(const Node&) {}
@@ -1254,12 +1254,12 @@
   /// \brief Default traits class of BfsVisit class.
   ///
   /// Default traits class of BfsVisit class.
-  /// \tparam _Digraph The type of the digraph the algorithm runs on.
-  template<class _Digraph>
+  /// \tparam GR The type of the digraph the algorithm runs on.
+  template<class GR>
   struct BfsVisitDefaultTraits {
 
     /// \brief The type of the digraph the algorithm runs on.
-    typedef _Digraph Digraph;
+    typedef GR Digraph;
 
     /// \brief The type of the map that indicates which nodes are reached.
     ///
@@ -1280,12 +1280,12 @@
 
   /// \ingroup search
   ///
-  /// \brief %BFS algorithm class with visitor interface.
+  /// \brief BFS algorithm class with visitor interface.
   ///
-  /// This class provides an efficient implementation of the %BFS algorithm
+  /// This class provides an efficient implementation of the BFS algorithm
   /// with visitor interface.
   ///
-  /// The %BfsVisit class provides an alternative interface to the Bfs
+  /// The BfsVisit class provides an alternative interface to the Bfs
   /// class. It works with callback mechanism, the BfsVisit object calls
   /// the member functions of the \c Visitor class on every BFS event.
   ///
@@ -1294,37 +1294,37 @@
   /// events of the BFS algorithm. Otherwise consider to use Bfs or bfs()
   /// instead.
   ///
-  /// \tparam _Digraph The type of the digraph the algorithm runs on.
-  /// The default value is
-  /// \ref ListDigraph. The value of _Digraph is not used directly by
-  /// \ref BfsVisit, it is only passed to \ref BfsVisitDefaultTraits.
-  /// \tparam _Visitor The Visitor type that is used by the algorithm.
-  /// \ref BfsVisitor "BfsVisitor<_Digraph>" is an empty visitor, which
+  /// \tparam GR The type of the digraph the algorithm runs on.
+  /// The default type is \ref ListDigraph.
+  /// The value of GR is not used directly by \ref BfsVisit,
+  /// it is only passed to \ref BfsVisitDefaultTraits.
+  /// \tparam VS The Visitor type that is used by the algorithm.
+  /// \ref BfsVisitor "BfsVisitor<GR>" is an empty visitor, which
   /// does not observe the BFS events. If you want to observe the BFS
   /// events, you should implement your own visitor class.
-  /// \tparam _Traits Traits class to set various data types used by the
+  /// \tparam TR Traits class to set various data types used by the
   /// algorithm. The default traits class is
-  /// \ref BfsVisitDefaultTraits "BfsVisitDefaultTraits<_Digraph>".
+  /// \ref BfsVisitDefaultTraits "BfsVisitDefaultTraits<GR>".
   /// See \ref BfsVisitDefaultTraits for the documentation of
   /// a BFS visit traits class.
 #ifdef DOXYGEN
-  template <typename _Digraph, typename _Visitor, typename _Traits>
+  template <typename GR, typename VS, typename TR>
 #else
-  template <typename _Digraph = ListDigraph,
-            typename _Visitor = BfsVisitor<_Digraph>,
-            typename _Traits = BfsVisitDefaultTraits<_Digraph> >
+  template <typename GR = ListDigraph,
+            typename VS = BfsVisitor<GR>,
+            typename TR = BfsVisitDefaultTraits<GR> >
 #endif
   class BfsVisit {
   public:
 
     ///The traits class.
-    typedef _Traits Traits;
+    typedef TR Traits;
 
     ///The type of the digraph the algorithm runs on.
     typedef typename Traits::Digraph Digraph;
 
     ///The visitor type used by the algorithm.
-    typedef _Visitor Visitor;
+    typedef VS Visitor;
 
     ///The type of the map that indicates which nodes are reached.
     typedef typename Traits::ReachedMap ReachedMap;
diff --git a/lemon/bits/array_map.h b/lemon/bits/array_map.h
--- a/lemon/bits/array_map.h
+++ b/lemon/bits/array_map.h
@@ -135,7 +135,7 @@
 
     // \brief Template assign operator.
     //
-    // The given parameter should be conform to the ReadMap
+    // The given parameter should conform to the ReadMap
     // concecpt and could be indiced by the current item set of
     // the NodeMap. In this case the value for each item
     // is assigned by the value of the given ReadMap.
diff --git a/lemon/bits/vector_map.h b/lemon/bits/vector_map.h
--- a/lemon/bits/vector_map.h
+++ b/lemon/bits/vector_map.h
@@ -124,7 +124,7 @@
 
     // \brief Template assign operator.
     //
-    // The given parameter should be conform to the ReadMap
+    // The given parameter should conform to the ReadMap
     // concecpt and could be indiced by the current item set of
     // the NodeMap. In this case the value for each item
     // is assigned by the value of the given ReadMap.
diff --git a/lemon/circulation.h b/lemon/circulation.h
--- a/lemon/circulation.h
+++ b/lemon/circulation.h
@@ -31,30 +31,30 @@
   /// \brief Default traits class of Circulation class.
   ///
   /// Default traits class of Circulation class.
-  /// \tparam _Diraph Digraph type.
-  /// \tparam _LCapMap Lower bound capacity map type.
-  /// \tparam _UCapMap Upper bound capacity map type.
-  /// \tparam _DeltaMap Delta map type.
-  template <typename _Diraph, typename _LCapMap,
-            typename _UCapMap, typename _DeltaMap>
+  /// \tparam GR Digraph type.
+  /// \tparam LM Lower bound capacity map type.
+  /// \tparam UM Upper bound capacity map type.
+  /// \tparam DM Delta map type.
+  template <typename GR, typename LM,
+            typename UM, typename DM>
   struct CirculationDefaultTraits {
 
     /// \brief The type of the digraph the algorithm runs on.
-    typedef _Diraph Digraph;
+    typedef GR Digraph;
 
     /// \brief The type of the map that stores the circulation lower
     /// bound.
     ///
     /// The type of the map that stores the circulation lower bound.
     /// It must meet the \ref concepts::ReadMap "ReadMap" concept.
-    typedef _LCapMap LCapMap;
+    typedef LM LCapMap;
 
     /// \brief The type of the map that stores the circulation upper
     /// bound.
     ///
     /// The type of the map that stores the circulation upper bound.
     /// It must meet the \ref concepts::ReadMap "ReadMap" concept.
-    typedef _UCapMap UCapMap;
+    typedef UM UCapMap;
 
     /// \brief The type of the map that stores the lower bound for
     /// the supply of the nodes.
@@ -62,7 +62,7 @@
     /// The type of the map that stores the lower bound for the supply
     /// of the nodes. It must meet the \ref concepts::ReadMap "ReadMap"
     /// concept.
-    typedef _DeltaMap DeltaMap;
+    typedef DM DeltaMap;
 
     /// \brief The type of the flow values.
     typedef typename DeltaMap::Value Value;
@@ -137,35 +137,33 @@
      \ref min_cost_flow "minimum cost flow" problem can be calculated
      in this way.
 
-     \tparam _Digraph The type of the digraph the algorithm runs on.
-     \tparam _LCapMap The type of the lower bound capacity map. The default
-     map type is \ref concepts::Digraph::ArcMap "_Digraph::ArcMap<int>".
-     \tparam _UCapMap The type of the upper bound capacity map. The default
-     map type is \c _LCapMap.
-     \tparam _DeltaMap The type of the map that stores the lower bound
+     \tparam GR The type of the digraph the algorithm runs on.
+     \tparam LM The type of the lower bound capacity map. The default
+     map type is \ref concepts::Digraph::ArcMap "GR::ArcMap<int>".
+     \tparam UM The type of the upper bound capacity map. The default
+     map type is \c LM.
+     \tparam DM The type of the map that stores the lower bound
      for the supply of the nodes. The default map type is
-     \c _Digraph::ArcMap<_UCapMap::Value>.
+     \ref concepts::Digraph::NodeMap "GR::NodeMap<UM::Value>".
   */
 #ifdef DOXYGEN
-template< typename _Digraph,
-          typename _LCapMap,
-          typename _UCapMap,
-          typename _DeltaMap,
-          typename _Traits >
+template< typename GR,
+          typename LM,
+          typename UM,
+          typename DM,
+          typename TR >
 #else
-template< typename _Digraph,
-          typename _LCapMap = typename _Digraph::template ArcMap<int>,
-          typename _UCapMap = _LCapMap,
-          typename _DeltaMap = typename _Digraph::
-                               template NodeMap<typename _UCapMap::Value>,
-          typename _Traits=CirculationDefaultTraits<_Digraph, _LCapMap,
-                                                    _UCapMap, _DeltaMap> >
+template< typename GR,
+          typename LM = typename GR::template ArcMap<int>,
+          typename UM = LM,
+          typename DM = typename GR::template NodeMap<typename UM::Value>,
+          typename TR = CirculationDefaultTraits<GR, LM, UM, DM> >
 #endif
   class Circulation {
   public:
 
     ///The \ref CirculationDefaultTraits "traits class" of the algorithm.
-    typedef _Traits Traits;
+    typedef TR Traits;
     ///The type of the digraph the algorithm runs on.
     typedef typename Traits::Digraph Digraph;
     ///The type of the flow values.
diff --git a/lemon/concepts/graph_components.h b/lemon/concepts/graph_components.h
--- a/lemon/concepts/graph_components.h
+++ b/lemon/concepts/graph_components.h
@@ -114,7 +114,7 @@
     /// \brief An empty base directed graph class.
     ///
     /// This class provides the minimal set of features needed for a
-    /// directed graph structure. All digraph concepts have to be
+    /// directed graph structure. All digraph concepts have to
     /// conform to this base directed graph. It just provides types
     /// for nodes and arcs and functions to get the source and the
     /// target of the arcs.
@@ -179,7 +179,7 @@
     ///
     /// This class provides the minimal set of features needed for an
     /// undirected graph structure. All undirected graph concepts have
-    /// to be conform to this base graph. It just provides types for
+    /// to conform to this base graph. It just provides types for
     /// nodes, arcs and edges and functions to get the
     /// source and the target of the arcs and edges,
     /// conversion from arcs to edges and function to get
@@ -294,7 +294,7 @@
     ///
     /// This class provides beside the core digraph features
     /// core id functions for the digraph structure.
-    /// The most of the base digraphs should be conform to this concept.
+    /// The most of the base digraphs should conform to this concept.
     /// The id's are unique and immutable.
     template <typename _Base = BaseDigraphComponent>
     class IDableDigraphComponent : public _Base {
@@ -372,7 +372,7 @@
     ///
     /// This class provides beside the core undirected graph features
     /// core id functions for the undirected graph structure.  The
-    /// most of the base undirected graphs should be conform to this
+    /// most of the base undirected graphs should conform to this
     /// concept.  The id's are unique and immutable.
     template <typename _Base = BaseGraphComponent>
     class IDableGraphComponent : public IDableDigraphComponent<_Base> {
diff --git a/lemon/dfs.h b/lemon/dfs.h
--- a/lemon/dfs.h
+++ b/lemon/dfs.h
@@ -49,11 +49,11 @@
     ///arcs of the %DFS paths.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     typedef typename Digraph::template NodeMap<typename Digraph::Arc> PredMap;
-    ///Instantiates a PredMap.
+    ///Instantiates a \c PredMap.
 
-    ///This function instantiates a PredMap.
+    ///This function instantiates a \ref PredMap.
     ///\param g is the digraph, to which we would like to define the
-    ///PredMap.
+    ///\ref PredMap.
     static PredMap *createPredMap(const Digraph &g)
     {
       return new PredMap(g);
@@ -64,11 +64,11 @@
     ///The type of the map that indicates which nodes are processed.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     typedef NullMap<typename Digraph::Node,bool> ProcessedMap;
-    ///Instantiates a ProcessedMap.
+    ///Instantiates a \c ProcessedMap.
 
-    ///This function instantiates a ProcessedMap.
+    ///This function instantiates a \ref ProcessedMap.
     ///\param g is the digraph, to which
-    ///we would like to define the ProcessedMap
+    ///we would like to define the \ref ProcessedMap.
 #ifdef DOXYGEN
     static ProcessedMap *createProcessedMap(const Digraph &g)
 #else
@@ -83,11 +83,11 @@
     ///The type of the map that indicates which nodes are reached.
     ///It must meet the \ref concepts::ReadWriteMap "ReadWriteMap" concept.
     typedef typename Digraph::template NodeMap<bool> ReachedMap;
-    ///Instantiates a ReachedMap.
+    ///Instantiates a \c ReachedMap.
 
-    ///This function instantiates a ReachedMap.
+    ///This function instantiates a \ref ReachedMap.
     ///\param g is the digraph, to which
-    ///we would like to define the ReachedMap.
+    ///we would like to define the \ref ReachedMap.
     static ReachedMap *createReachedMap(const Digraph &g)
     {
       return new ReachedMap(g);
@@ -98,11 +98,11 @@
     ///The type of the map that stores the distances of the nodes.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     typedef typename Digraph::template NodeMap<int> DistMap;
-    ///Instantiates a DistMap.
+    ///Instantiates a \c DistMap.
 
-    ///This function instantiates a DistMap.
+    ///This function instantiates a \ref DistMap.
     ///\param g is the digraph, to which we would like to define the
-    ///DistMap.
+    ///\ref DistMap.
     static DistMap *createDistMap(const Digraph &g)
     {
       return new DistMap(g);
@@ -220,10 +220,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///PredMap type.
+    ///\c PredMap type.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///PredMap type.
+    ///\c PredMap type.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     template <class T>
     struct SetPredMap : public Dfs<Digraph, SetPredMapTraits<T> > {
@@ -240,10 +240,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///DistMap type.
+    ///\c DistMap type.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///DistMap type.
+    ///\c DistMap type.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     template <class T>
     struct SetDistMap : public Dfs< Digraph, SetDistMapTraits<T> > {
@@ -260,10 +260,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///ReachedMap type.
+    ///\c ReachedMap type.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///ReachedMap type.
+    ///\c ReachedMap type.
     ///It must meet the \ref concepts::ReadWriteMap "ReadWriteMap" concept.
     template <class T>
     struct SetReachedMap : public Dfs< Digraph, SetReachedMapTraits<T> > {
@@ -280,10 +280,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///ProcessedMap type.
+    ///\c ProcessedMap type.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///ProcessedMap type.
+    ///\c ProcessedMap type.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     template <class T>
     struct SetProcessedMap : public Dfs< Digraph, SetProcessedMapTraits<T> > {
@@ -298,10 +298,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>.
+    ///\c ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>.
+    ///\c ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>.
     ///If you don't set it explicitly, it will be automatically allocated.
     struct SetStandardProcessedMap :
       public Dfs< Digraph, SetStandardProcessedMapTraits > {
@@ -1126,9 +1126,9 @@
   ///
   /// This class defines the interface of the DfsVisit events, and
   /// it could be the base of a real visitor class.
-  template <typename _Digraph>
+  template <typename GR>
   struct DfsVisitor {
-    typedef _Digraph Digraph;
+    typedef GR Digraph;
     typedef typename Digraph::Arc Arc;
     typedef typename Digraph::Node Node;
     /// \brief Called for the source node of the DFS.
@@ -1164,9 +1164,9 @@
     void backtrack(const Arc& arc) {}
   };
 #else
-  template <typename _Digraph>
+  template <typename GR>
   struct DfsVisitor {
-    typedef _Digraph Digraph;
+    typedef GR Digraph;
     typedef typename Digraph::Arc Arc;
     typedef typename Digraph::Node Node;
     void start(const Node&) {}
@@ -1199,11 +1199,11 @@
   ///
   /// Default traits class of DfsVisit class.
   /// \tparam _Digraph The type of the digraph the algorithm runs on.
-  template<class _Digraph>
+  template<class GR>
   struct DfsVisitDefaultTraits {
 
     /// \brief The type of the digraph the algorithm runs on.
-    typedef _Digraph Digraph;
+    typedef GR Digraph;
 
     /// \brief The type of the map that indicates which nodes are reached.
     ///
@@ -1224,12 +1224,12 @@
 
   /// \ingroup search
   ///
-  /// \brief %DFS algorithm class with visitor interface.
+  /// \brief DFS algorithm class with visitor interface.
   ///
-  /// This class provides an efficient implementation of the %DFS algorithm
+  /// This class provides an efficient implementation of the DFS algorithm
   /// with visitor interface.
   ///
-  /// The %DfsVisit class provides an alternative interface to the Dfs
+  /// The DfsVisit class provides an alternative interface to the Dfs
   /// class. It works with callback mechanism, the DfsVisit object calls
   /// the member functions of the \c Visitor class on every DFS event.
   ///
@@ -1238,37 +1238,37 @@
   /// events of the DFS algorithm. Otherwise consider to use Dfs or dfs()
   /// instead.
   ///
-  /// \tparam _Digraph The type of the digraph the algorithm runs on.
-  /// The default value is
-  /// \ref ListDigraph. The value of _Digraph is not used directly by
-  /// \ref DfsVisit, it is only passed to \ref DfsVisitDefaultTraits.
-  /// \tparam _Visitor The Visitor type that is used by the algorithm.
-  /// \ref DfsVisitor "DfsVisitor<_Digraph>" is an empty visitor, which
+  /// \tparam GR The type of the digraph the algorithm runs on.
+  /// The default type is \ref ListDigraph.
+  /// The value of GR is not used directly by \ref DfsVisit,
+  /// it is only passed to \ref DfsVisitDefaultTraits.
+  /// \tparam VS The Visitor type that is used by the algorithm.
+  /// \ref DfsVisitor "DfsVisitor<GR>" is an empty visitor, which
   /// does not observe the DFS events. If you want to observe the DFS
   /// events, you should implement your own visitor class.
-  /// \tparam _Traits Traits class to set various data types used by the
+  /// \tparam TR Traits class to set various data types used by the
   /// algorithm. The default traits class is
-  /// \ref DfsVisitDefaultTraits "DfsVisitDefaultTraits<_Digraph>".
+  /// \ref DfsVisitDefaultTraits "DfsVisitDefaultTraits<GR>".
   /// See \ref DfsVisitDefaultTraits for the documentation of
   /// a DFS visit traits class.
 #ifdef DOXYGEN
-  template <typename _Digraph, typename _Visitor, typename _Traits>
+  template <typename GR, typename VS, typename TR>
 #else
-  template <typename _Digraph = ListDigraph,
-            typename _Visitor = DfsVisitor<_Digraph>,
-            typename _Traits = DfsVisitDefaultTraits<_Digraph> >
+  template <typename GR = ListDigraph,
+            typename VS = DfsVisitor<GR>,
+            typename TR = DfsVisitDefaultTraits<GR> >
 #endif
   class DfsVisit {
   public:
 
     ///The traits class.
-    typedef _Traits Traits;
+    typedef TR Traits;
 
     ///The type of the digraph the algorithm runs on.
     typedef typename Traits::Digraph Digraph;
 
     ///The visitor type used by the algorithm.
-    typedef _Visitor Visitor;
+    typedef VS Visitor;
 
     ///The type of the map that indicates which nodes are reached.
     typedef typename Traits::ReachedMap ReachedMap;
diff --git a/lemon/dijkstra.h b/lemon/dijkstra.h
--- a/lemon/dijkstra.h
+++ b/lemon/dijkstra.h
@@ -73,7 +73,7 @@
     ///The type of the length of the arcs.
     typedef typename LM::Value Value;
 
-    /// Operation traits for Dijkstra algorithm.
+    /// Operation traits for %Dijkstra algorithm.
 
     /// This class defines the operations that are used in the algorithm.
     /// \see DijkstraDefaultOperationTraits
@@ -84,7 +84,7 @@
     /// The cross reference type used by the heap.
     /// Usually it is \c Digraph::NodeMap<int>.
     typedef typename Digraph::template NodeMap<int> HeapCrossRef;
-    ///Instantiates a \ref HeapCrossRef.
+    ///Instantiates a \c HeapCrossRef.
 
     ///This function instantiates a \ref HeapCrossRef.
     /// \param g is the digraph, to which we would like to define the
@@ -94,14 +94,14 @@
       return new HeapCrossRef(g);
     }
 
-    ///The heap type used by the Dijkstra algorithm.
+    ///The heap type used by the %Dijkstra algorithm.
 
     ///The heap type used by the Dijkstra algorithm.
     ///
     ///\sa BinHeap
     ///\sa Dijkstra
     typedef BinHeap<typename LM::Value, HeapCrossRef, std::less<Value> > Heap;
-    ///Instantiates a \ref Heap.
+    ///Instantiates a \c Heap.
 
     ///This function instantiates a \ref Heap.
     static Heap *createHeap(HeapCrossRef& r)
@@ -116,11 +116,11 @@
     ///arcs of the shortest paths.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     typedef typename Digraph::template NodeMap<typename Digraph::Arc> PredMap;
-    ///Instantiates a PredMap.
+    ///Instantiates a \c PredMap.
 
-    ///This function instantiates a PredMap.
+    ///This function instantiates a \ref PredMap.
     ///\param g is the digraph, to which we would like to define the
-    ///PredMap.
+    ///\ref PredMap.
     static PredMap *createPredMap(const Digraph &g)
     {
       return new PredMap(g);
@@ -132,11 +132,11 @@
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     ///By default it is a NullMap.
     typedef NullMap<typename Digraph::Node,bool> ProcessedMap;
-    ///Instantiates a ProcessedMap.
+    ///Instantiates a \c ProcessedMap.
 
-    ///This function instantiates a ProcessedMap.
+    ///This function instantiates a \ref ProcessedMap.
     ///\param g is the digraph, to which
-    ///we would like to define the ProcessedMap
+    ///we would like to define the \ref ProcessedMap.
 #ifdef DOXYGEN
     static ProcessedMap *createProcessedMap(const Digraph &g)
 #else
@@ -151,11 +151,11 @@
     ///The type of the map that stores the distances of the nodes.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     typedef typename Digraph::template NodeMap<typename LM::Value> DistMap;
-    ///Instantiates a DistMap.
+    ///Instantiates a \c DistMap.
 
-    ///This function instantiates a DistMap.
+    ///This function instantiates a \ref DistMap.
     ///\param g is the digraph, to which we would like to define
-    ///the DistMap
+    ///the \ref DistMap.
     static DistMap *createDistMap(const Digraph &g)
     {
       return new DistMap(g);
@@ -216,7 +216,8 @@
     typedef typename TR::HeapCrossRef HeapCrossRef;
     ///The heap type used by the algorithm.
     typedef typename TR::Heap Heap;
-    ///The operation traits class.
+    ///\brief The \ref DijkstraDefaultOperationTraits "operation traits class"
+    ///of the algorithm.
     typedef typename TR::OperationTraits OperationTraits;
 
     ///The \ref DijkstraDefaultTraits "traits class" of the algorithm.
@@ -232,7 +233,7 @@
     //Pointer to the underlying digraph.
     const Digraph *G;
     //Pointer to the length map.
-    const LengthMap *length;
+    const LengthMap *_length;
     //Pointer to the map of predecessors arcs.
     PredMap *_pred;
     //Indicates if _pred is locally allocated (true) or not.
@@ -297,10 +298,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///PredMap type.
+    ///\c PredMap type.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///PredMap type.
+    ///\c PredMap type.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     template <class T>
     struct SetPredMap
@@ -318,10 +319,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///DistMap type.
+    ///\c DistMap type.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///DistMap type.
+    ///\c DistMap type.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     template <class T>
     struct SetDistMap
@@ -339,10 +340,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///ProcessedMap type.
+    ///\c ProcessedMap type.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///ProcessedMap type.
+    ///\c ProcessedMap type.
     ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
     template <class T>
     struct SetProcessedMap
@@ -358,10 +359,10 @@
       }
     };
     ///\brief \ref named-templ-param "Named parameter" for setting
-    ///ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>.
+    ///\c ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>.
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>.
+    ///\c ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>.
     ///If you don't set it explicitly, it will be automatically allocated.
     struct SetStandardProcessedMap
       : public Dijkstra< Digraph, LengthMap, SetStandardProcessedMapTraits > {
@@ -439,7 +440,7 @@
     ///\c OperationTraits type
     ///
     ///\ref named-templ-param "Named parameter" for setting
-    ///\ref OperationTraits type.
+    ///\c OperationTraits type.
     template <class T>
     struct SetOperationTraits
       : public Dijkstra<Digraph, LengthMap, SetOperationTraitsTraits<T> > {
@@ -458,10 +459,10 @@
     ///Constructor.
 
     ///Constructor.
-    ///\param _g The digraph the algorithm runs on.
-    ///\param _length The length map used by the algorithm.
-    Dijkstra(const Digraph& _g, const LengthMap& _length) :
-      G(&_g), length(&_length),
+    ///\param g The digraph the algorithm runs on.
+    ///\param length The length map used by the algorithm.
+    Dijkstra(const Digraph& g, const LengthMap& length) :
+      G(&g), _length(&length),
       _pred(NULL), local_pred(false),
       _dist(NULL), local_dist(false),
       _processed(NULL), local_processed(false),
@@ -485,7 +486,7 @@
     ///\return <tt> (*this) </tt>
     Dijkstra &lengthMap(const LengthMap &m)
     {
-      length = &m;
+      _length = &m;
       return *this;
     }
 
@@ -638,12 +639,12 @@
         Node w=G->target(e);
         switch(_heap->state(w)) {
         case Heap::PRE_HEAP:
-          _heap->push(w,OperationTraits::plus(oldvalue, (*length)[e]));
+          _heap->push(w,OperationTraits::plus(oldvalue, (*_length)[e]));
           _pred->set(w,e);
           break;
         case Heap::IN_HEAP:
           {
-            Value newvalue = OperationTraits::plus(oldvalue, (*length)[e]);
+            Value newvalue = OperationTraits::plus(oldvalue, (*_length)[e]);
             if ( OperationTraits::less(newvalue, (*_heap)[w]) ) {
               _heap->decrease(w, newvalue);
               _pred->set(w,e);
diff --git a/lemon/preflow.h b/lemon/preflow.h
--- a/lemon/preflow.h
+++ b/lemon/preflow.h
@@ -31,19 +31,19 @@
   /// \brief Default traits class of Preflow class.
   ///
   /// Default traits class of Preflow class.
-  /// \tparam _Digraph Digraph type.
-  /// \tparam _CapacityMap Capacity map type.
-  template <typename _Digraph, typename _CapacityMap>
+  /// \tparam GR Digraph type.
+  /// \tparam CM Capacity map type.
+  template <typename GR, typename CM>
   struct PreflowDefaultTraits {
 
     /// \brief The type of the digraph the algorithm runs on.
-    typedef _Digraph Digraph;
+    typedef GR Digraph;
 
     /// \brief The type of the map that stores the arc capacities.
     ///
     /// The type of the map that stores the arc capacities.
     /// It must meet the \ref concepts::ReadMap "ReadMap" concept.
-    typedef _CapacityMap CapacityMap;
+    typedef CM CapacityMap;
 
     /// \brief The type of the flow values.
     typedef typename CapacityMap::Value Value;
@@ -104,21 +104,21 @@
   /// the maximum flow value and the minimum cut is obtained. The
   /// second phase constructs a feasible maximum flow on each arc.
   ///
-  /// \tparam _Digraph The type of the digraph the algorithm runs on.
-  /// \tparam _CapacityMap The type of the capacity map. The default map
-  /// type is \ref concepts::Digraph::ArcMap "_Digraph::ArcMap<int>".
+  /// \tparam GR The type of the digraph the algorithm runs on.
+  /// \tparam CM The type of the capacity map. The default map
+  /// type is \ref concepts::Digraph::ArcMap "GR::ArcMap<int>".
 #ifdef DOXYGEN
-  template <typename _Digraph, typename _CapacityMap, typename _Traits>
+  template <typename GR, typename CM, typename TR>
 #else
-  template <typename _Digraph,
-            typename _CapacityMap = typename _Digraph::template ArcMap<int>,
-            typename _Traits = PreflowDefaultTraits<_Digraph, _CapacityMap> >
+  template <typename GR,
+            typename CM = typename GR::template ArcMap<int>,
+            typename TR = PreflowDefaultTraits<GR, CM> >
 #endif
   class Preflow {
   public:
 
     ///The \ref PreflowDefaultTraits "traits class" of the algorithm.
-    typedef _Traits Traits;
+    typedef TR Traits;
     ///The type of the digraph the algorithm runs on.
     typedef typename Traits::Digraph Digraph;
     ///The type of the capacity map.