Minor This is implicitly allowed by the current CSDL document, and is explicitly mentioned in the OSP version at http://msdn.microsoft.com/en-us/library/dd541598(v=prot.10), fourth bullet point.
This is implicitly allowed by the current CSDL document, and is explicitly mentioned in the OSP version at http://msdn.microsoft.com/en-us/library/dd541598(v=prot.10), fourth bullet point.