diff -r 596e48d6e77b -r b4931ae52069 lemon/lp_skeleton.h
--- a/lemon/lp_skeleton.h	Mon Dec 04 18:09:09 2006 +0000
+++ b/lemon/lp_skeleton.h	Thu Dec 07 16:10:54 2006 +0000
@@ -64,12 +64,22 @@
     virtual void _setColLowerBound(int i, Value value);
     /// \e
 
+    /// The lower bound of a variable (column) is an 
+    /// extended number of type Value, i.e. a finite number of type 
+    /// Value or -\ref INF.
+    virtual Value _getColLowerBound(int i);
+
     /// The upper bound of a variable (column) have to be given by an 
     /// extended number of type Value, i.e. a finite number of type 
     /// Value or \ref INF.
     virtual void _setColUpperBound(int i, Value value);
     /// \e
 
+    /// The upper bound of a variable (column) is an 
+    /// extended number of type Value, i.e. a finite number of type 
+    /// Value or \ref INF.
+    virtual Value _getColUpperBound(int i);
+
 //     /// The lower bound of a linear expression (row) have to be given by an 
 //     /// extended number of type Value, i.e. a finite number of type 
 //     /// Value or -\ref INF.
@@ -89,6 +99,14 @@
     /// \e
 
 
+    /// The lower and the upper bound of
+    /// a constraint (row) are  
+    /// extended numbers of type Value, i.e.  finite numbers of type 
+    /// Value, -\ref INF or \ref INF. 
+    virtual void _getRowBounds(int i, Value &lb, Value &ub);
+    /// \e
+
+
     /// \e
     virtual void _clearObj();
     /// \e