+* Value Parameter
+
+ I believe that `Value Parameter' might have been introduced
+ after C# 1.0, also notice than in the treatment of Value Parameter
+ the parameters are defined in four categories:
+
+ Section 9.3 in the latest spec.
+
+
+* Review
+--------
+
+ Reference type equality operators (15.9.6) introduced
+ operator == (C x, C y) where C is a reference type.
+
+ Our compiler used:
+
+ operator == (object a, object b)
+
+ Review our implementation.
+
New
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