8. The method of claim 7 , wherein the output document does not include the name of the first data element.
7. The method of claim 6 , further comprising: determining whether a name of a first data element in the input document is listed in a predefined table of data element names; and inserting into the output document, as a result of determining that the name of the first data element is listed in the predefined table of data element names, a reference to the name of the first data element from the table of data element names.