 - a verb must include exactly one noun and any number of foreign elements

 - the foreign elements must be saved to the data structure and be available
   to the caller

 - test the above



 - do a better job on producing well-formed XML as output of
   stringify:

     - quote ampersands, &lt; &rt; 

     - encode quotes in attribute values

 - put data source filename into AMF::Record?


