[NTG-context] Show the results of XML mapping

When I map from XML to ConTeXt there are lots of rules mapping lots of small bit of XML to small bits of ConTeXt and it is hard get the big picture. If something doesn’t work in the final PDF document it can be hard to know if the mapping failed to match the XML or if the generated ConTeXt was wrong. Is there a way to capture the ConTeXt generated from the mapping rules before it goes on to produce the final document? Thanks Aidan