5. The method according to claim 4 , further comprising: determining if the source data element does not match any of the exemplary data elements; and assigning a default identifier to the source data element that does not match any of the exemplary data elements.
6. The method according to claim 5 , further comprising any of: highlighting the source data element having the default identifier in the structured document; and adding the source data element to a list of source data elements having default identifiers.