diff -r 9bb0bfea2f0b -r b089e7195664 lemon/bits/invalid.h
--- a/lemon/bits/invalid.h	Fri Jul 14 13:48:14 2006 +0000
+++ b/lemon/bits/invalid.h	Mon Jul 17 07:00:39 2006 +0000
@@ -24,10 +24,9 @@
 
 namespace lemon {
 
-  /// Dummy type to make it easier to make invalid iterators.
+  /// \brief Dummy type to make it easier to make invalid iterators.
   
-  /// See \ref INVALID, how to use it.
-  
+  /// See \ref INVALID for the usage.
   struct Invalid {
   public:
     bool operator==(Invalid) { return true;  }