diff -r 5b3737aa595a -r 85c6f5e82108 lemon/list_graph.h
--- a/lemon/list_graph.h	Tue Jul 11 12:37:53 2006 +0000
+++ b/lemon/list_graph.h	Tue Jul 11 13:51:52 2006 +0000
@@ -166,6 +166,8 @@
 
     /// Adds a new node to the graph.
 
+    /// Adds a new node to the graph.
+    ///
     /// \warning It adds the new node to the front of the list.
     /// (i.e. the lastly added node becomes the first.)
     Node addNode() {     
@@ -349,6 +351,8 @@
     ///\note The <tt>Edge</tt>s and <tt>OutEdgeIt</tt>s referencing
     ///the changed edge remain valid. However <tt>InEdgeIt</tt>s are
     ///invalidated.
+    ///\warning This functionality cannot be used together with the Snapshot
+    ///feature.
     void changeTarget(Edge e, Node n) { 
       Parent::changeTarget(e,n); 
     }
@@ -359,6 +363,8 @@
     ///\note The <tt>Edge</tt>s and <tt>InEdgeIt</tt>s referencing
     ///the changed edge remain valid. However <tt>OutEdgeIt</tt>s are
     ///invalidated.
+    ///\warning This functionality cannot be used together with the Snapshot
+    ///feature.
     void changeSource(Edge e, Node n) { 
       Parent::changeSource(e,n);
     }
@@ -368,6 +374,8 @@
     ///\note The <tt>Edge</tt>s referencing the changed edge remain
     ///valid. However <tt>OutEdgeIt</tt>s and <tt>InEdgeIt</tt>s are
     ///invalidated.
+    ///\warning This functionality cannot be used together with the Snapshot
+    ///feature.
     void reverseEdge(Edge e) {
       Node t=target(e);
       changeTarget(e,source(e));
@@ -379,7 +387,7 @@
 
     ///Using this it is possible to avoid the superfluous memory
     ///allocation: if you know that the graph you want to build will
-    ///contain at least 10 million nodes then it is worth to reserve
+    ///contain at least 10 million nodes then it is worth reserving
     ///space for this amount before starting to build the graph.
     void reserveNode(int n) { nodes.reserve(n); };
 
@@ -404,6 +412,8 @@
     ///referencing a moved edge remain
     ///valid. However <tt>InEdge</tt>s and <tt>OutEdge</tt>s
     ///may be invalidated.
+    ///\warning This functionality cannot be used together with the Snapshot
+    ///feature.
     void contract(Node a, Node b, bool r = true) 
     {
       for(OutEdgeIt e(*this,b);e!=INVALID;) {
@@ -680,9 +690,7 @@
       
       /// \brief Undo the changes until the last snapshot.
       // 
-      /// Undo the changes until last snapshot created by save().
-      ///
-      /// \todo This function might be called undo().
+      /// Undo the changes until the last snapshot created by save().
       void restore() {
 	detach();
 	while(!added_edges.empty()) {