What's New in the XML Editor
The following features are new in Visual Studio 2010.
The XSLT IntelliSense feature allows you to auto-complete attribute set names; template modes and names; and parameter names for a specified mode or a specified named template. For more information, see XML Editor IntelliSense Features.
The XSLT Profiler creates detailed XSLT performance reports that help you measure, evaluate, and target performance-related problems in XSLT code. The XSLT Profiler also includes useful hints for XSL and XSLT style sheet optimizations. For more information, see Walkthrough: XSLT Profiler.
The XSLT Hierarchy tool allows you to add breakpoints in included style sheets and/or built-in template rules. For more information, see Walkthrough: Using XSLT Hierarchy.