T4

• T4 Editor plus UML-Style modeling tools for Visual Studio 2008/2010
• MetaGen: A project metadata generator for Visual Studio using T4
• Using the default editor (not the Tangible Engineering one) you can put breakpoints in and debug interactively. Put the following code at the beginning of executable code in your template (and make sure that debug="true" is set in the tempalte language definition line):

         System.Diagnostics.Debugger.Break();