14. The system according to claim 9 , wherein the at least one processor unit is configured to create one or more shadow fields for the metadata related to the first plurality of documents.
14. The system according to claim 9 , wherein the at least one processor unit is configured to create one or more shadow fields for the metadata related to the first plurality of documents. 15. The system according to claim 14 , wherein the one or more shadow fields comprise a keyword field.