Visual Studio 2005 includes improvements to IntelliSense, code snippets, revision marks, the designer, XML support, refactoring, partial classes, debugging, and other IDE features. New controls were added to the designer, IntelliSense was made more complete and remembers frequently used items, and refactoring capabilities like rename and extract method were introduced. Debugging was also enhanced with data visualizers, data tips, and edit-and-continue for VB.Net.