- Make documentation of struct _down_cast slightly better.

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@1212 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/backend/sgpemv2/templates/down_cast.tcc

@@ -64,9 +64,9 @@ namespace sgpem
     // because in this way the parameter of operator() 
     // is automatically deduced by the compiler (else we 
     // would have to provide two template parameters), and
-    // we've an extra type-check that we aren't using 
-    // normal objects as template parameters, but
-    // just pointers or references.
+    // we can partially instantiate the template with
+    // just pointers or references (whereas, you cannot
+    // partially instantiate a template of a function).
   };
 
   // --------------------------------------