Visual Studio 2010 includes new features to improve developing web, office, and C++ applications. As an editor, VS2010 focuses on writing, understanding, navigating, and publishing code. As a platform, VS2010 features an extensible editor and online gallery. What's new in ASP.NET 4 includes extensible output caching, auto-starting web applications, permanently redirecting pages, setting client IDs, and the ASP.NET chart control.