Where is the specification for the Base Class Library?

Question

I am looking for the "definitive" specification for the Base Class Library. I've perused ECMA 334, ECMA-335, IEC 23270, IEC 23271. And I expected to find details for everything in all the standardized BCL namespaces (e.g., System, System.Collections, etc.) but it doesn't appear to be in those documents.

Is the specification just the .NET MSDN documentation or is there something else?

Am I missing the boat on how a CLI language and the .NET Framework fit together?

Answer 1

The zip at http://www.ecma-international.org/publications/standards/Ecma-335.htm contains documentation for the BCL classes.