I have a tool I absolutely love for HL7 v2 analysis and manipulation. It's called [7edit](http://7edit.com/).  I'm wondering if there is _anything _similar for HL7v3/CDA/CCD.  I know it is considerably more complex, but I still have hope. So far the best resource I've found is http://www.cdapro.com/.  I'd love to hear anyone else's tips for tools or resources.