AFAIK pressing F1 in Visual Studio takes you to the top Bing result for the text under the cursor within MSDN. This could be the reference you were looking for,

AFAIK pressing F1 in Visual Studio takes you to the top Bing result for the text under the cursor within MSDN. This could be the reference you were looking for, a reference for something completely different in a different programming language (a lot of potentially helpful context is not considered) or in extreme cases some other random article or discussion. It's all over the place.