Ever wonder what that pesky system.ServiceModel element or attribute is for?
WCF 4.5 adds much asked for tool tips on every element and attribute in the WCF configuration file to keep you productive and save you round trips to MSDN.
Learn more about the great productivity improvements to WCF 4.5 here: http://msdn.microsoft.com/en-us/library/dd456789(v=vs.110).aspx