Seems for me like Microsoft doesn’t like well-looking diagrams. I looked at some documentation over ASP.NET page lifecycle, and the results (diagrams) were rather ugly, just take a look: ASP.NET Page Life Cycle Overview ASP.NET Application Life Cycle Overview for IIS 7.0 ASP.NET Integration with IIS 7 Whilst I want to have the possibility for … More Yet Another Asp.net Page Lifecycle diagram