4. The method of claim 1 wherein assigning an initial ranking value or a revised ranking value of a document in the corpus comprises the cross-referencing engine accumulating computed co-occurrence values corresponding with common occurrences of stemmed words appearing within the editable user document and within said document in the corpus.
4. The method of claim 1 wherein assigning an initial ranking value or a revised ranking value of a document in the corpus comprises the cross-referencing engine accumulating computed co-occurrence values corresponding with common occurrences of stemmed words appearing within the editable user document and within said document in the corpus. 8. The method of claim 4 wherein the cross-referencing engine accumulating co-occurrence values comprises accumulating values corresponding with occurrences of synonyms of stemmed words appearing within the editable user document and within said document in the corpus.