diff --git a/eo/src/eoFunctor.h b/eo/src/eoFunctor.h
index e4fd3056..01d96db7 100644
--- a/eo/src/eoFunctor.h
+++ b/eo/src/eoFunctor.h
@@ -28,8 +28,21 @@
 
 #include <functional>
 
-/// Base class for functors to get a nice hierarchy diagram
-class eoFunctorBase 
+/** Base class for functors to get a nice hierarchy diagram
+
+    That's actually quite an understatement as it does quite a bit more than
+    just that. By having all functors derive from the same base class, we can
+    do some memory management that would otherwise be very hard.
+
+    The memory management base class is called eoFunctorStore, and it supports
+    a member add() to add a pointer to a functor. When the functorStore is
+    destroyed, it will delete all those pointers. So beware: do not delete
+    the functorStore before you are done with anything that might have been allocated.
+
+    @see eoFunctorStore
+
+*/
+class eoFunctorBase
 {
 public :
     virtual ~eoFunctorBase() {}
@@ -42,7 +55,7 @@ public :
     struct binary_function_tag {};
 };
 
-/** 
+/**
     Basic Function. Derive from this class when defining
     any procedure. It defines a result_type that can be used
     to determine the return type
@@ -53,12 +66,12 @@ template <class R>
 class eoF : public eoFunctorBase
 {
 public :
-    
+
     /// virtual dtor here so there is no need to define it in derived classes
     virtual ~eoF() {}
 
     typedef R result_type;
-    
+
     /// The pure virtual function that needs to be implemented by the subclass
     virtual R operator()() = 0;
 };