Silverlight SOS (Son of Strike) documentation

Is there any Microsoft or even non-official documentation for SOS for Silverlight. Other than a few web posts I have seen zero documentation for it on MSDN. Even official documentation for the CLR version of SOS seems hard to find, this ancient article mentions a sos.htm file that is included in the windows SDK but it doesn't appear to be there anymore. Any pointers to debugging Silverlight with SOS? I have found the following blog posts but am looking for more information:

http://davybrion.com/blog/2009/08/finding-memory-leaks-in-silverlight-with-windbg/

http://www.ningzhang.org/2008/12/19/silverlight-debugging-with-windbg-and-sos/

http://debuggingblog.com/wp/2009/07/07/windbg-extension-sos-in-clr-40net-framework-40-ctp-net-runtime-dll-renamed-and-sos-commands-just-got-richer/

http://www.netfxharmonics.com开发者_开发问答/label/debugging

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Using SOS to debug Silverlight should be the same as debugging the regular framework. !help is a good place to start to see all the commands SOS exposes.

Is there something else you're looking for?