Both Silverlight and WPF use XAML markup to describe their user interface.  As I'm currently writing my chapter on WPF for my book IronRuby In Action and I want to use some xaml that has been generated before for a different project but with an IronRuby class to load the xaml I'm in trouble. This is because you can declare assembly references in the xml namespace declarations so you can use the types in that assembly from xaml.  The DLR based languages don't compile into static assem...