1.1 --- a/lemon/concepts/graph.h	Thu Mar 05 10:13:20 2009 +0000
     1.2 +++ b/lemon/concepts/graph.h	Sun Mar 29 23:08:20 2009 +0200
     1.3 @@ -601,23 +601,35 @@
     1.4  
     1.5        /// \brief Opposite node on an arc
     1.6        ///
     1.7 -      /// \return the opposite of the given Node on the given Edge
     1.8 +      /// \return The opposite of the given node on the given edge.
     1.9        Node oppositeNode(Node, Edge) const { return INVALID; }
    1.10  
    1.11        /// \brief First node of the edge.
    1.12        ///
    1.13 -      /// \return the first node of the given Edge.
    1.14 +      /// \return The first node of the given edge.
    1.15        ///
    1.16        /// Naturally edges don't have direction and thus
    1.17 -      /// don't have source and target node. But we use these two methods
    1.18 -      /// to query the two nodes of the arc. The direction of the arc
    1.19 -      /// which arises this way is called the inherent direction of the
    1.20 +      /// don't have source and target node. However we use \c u() and \c v()
    1.21 +      /// methods to query the two nodes of the arc. The direction of the
    1.22 +      /// arc which arises this way is called the inherent direction of the
    1.23        /// edge, and is used to define the "default" direction
    1.24        /// of the directed versions of the arcs.
    1.25 -      /// \sa direction
    1.26 +      /// \sa v()
    1.27 +      /// \sa direction()
    1.28        Node u(Edge) const { return INVALID; }
    1.29  
    1.30        /// \brief Second node of the edge.
    1.31 +      ///
    1.32 +      /// \return The second node of the given edge.
    1.33 +      ///
    1.34 +      /// Naturally edges don't have direction and thus
    1.35 +      /// don't have source and target node. However we use \c u() and \c v()
    1.36 +      /// methods to query the two nodes of the arc. The direction of the
    1.37 +      /// arc which arises this way is called the inherent direction of the
    1.38 +      /// edge, and is used to define the "default" direction
    1.39 +      /// of the directed versions of the arcs.
    1.40 +      /// \sa u()
    1.41 +      /// \sa direction()
    1.42        Node v(Edge) const { return INVALID; }
    1.43  
    1.44        /// \brief Source node of the directed arc.