HMC 4.5 Exchange 2007 Resource Manager - How it sorta works

I was browsing the inter-tubes today looking for some information on HMC 4.5 and ran across this link about the Exchange 2007 Resource manager and how it's tracking information in the ResourceManager backend databases as well as details on some of the procedures within the namespace. This is one of the best docs we've been able to find so far on this topic. Other similar docs can be found at http://www.mshosting.org/Tech-Bulletins/HMC/