grouping classes in documentation

eo/src/eoContinue.h

@@ -29,9 +29,20 @@
 #include <eoPop.h>
 #include <eoPersistent.h>
 
+/** @defgroup Continuators Stopping criteria
+ *
+ * A stopping criterion is called a "continue". This is a functor that is called at each generation end 
+ * and that return true if one should stop the search.
+ *
+ *  @ingroup Utilities
+ */
+
 /** Termination condition for the genetic algorithm
  * Takes the population as input, returns true for continue,
  * false for termination 
+ *
+ * @ingroup Continuators
+ * @ingroup Core
  */
 template< class EOT>
 class eoContinue : public eoUF<const eoPop<EOT>&, bool>, public eoPersistent