diff -r 6f10c6ec5a21 -r ceb2756dea2a lemon/concepts/graph_components.h
--- a/lemon/concepts/graph_components.h	Mon Sep 28 15:53:20 2009 +0200
+++ b/lemon/concepts/graph_components.h	Thu Nov 05 10:27:17 2009 +0100
@@ -92,7 +92,7 @@
       /// It makes possible to use graph item types as key types in 
       /// associative containers (e.g. \c std::map).
       ///
-      /// \note This operator only have to define some strict ordering of
+      /// \note This operator only has to define some strict ordering of
       /// the items; this order has nothing to do with the iteration
       /// ordering of the items.
       bool operator<(const GraphItem&) const { return false; }