9. A method according to claim 3 and including automatically machine-selecting search words from each document to be used in locating the document from mass storage.
9. A method according to claim 3 and including automatically machine-selecting search words from each document to be used in locating the document from mass storage. 10. A method according to claim 9 and including correlating each search word with a date indicative of an interval of time during which the document from which the search word was selected was sent and received.