12. A computerized method of identifying an item of text in a source document quoted in a quoting document, the method comprising: a) opening the quoting document that is stored on a tangible, non-transitory computer readable memory in a computer program operating on a computer; b) searching, using the computer program operating on the computer, the quoting document for a quotation and identifying the item of text as the quotation; c) determining the source document from text near the quotation in the quoting document; d) opening the source document on the computer; e) automatically locating the item of quoted text in the source document using the computer; f) storing, on a tangible, non-transitory computer readable memory, information in a data construct associated with the source document indicating the fact that the item of quoted text within the source document has been quoted by the quoting document as well as the location of the item of quoted text within the source document; g) when displaying the source document through a computer interface, recalling the stored location of the item of quoted text and highlighting the item of quoted text as different than other portions of the source document, wherein a technique for the highlighting is selected from a set comprising changing a color of a font for displayed text, creating a different colored background for displayed text, and otherwise visually emphasizing the importance of displayed text; h) receiving, through the computer interface, a user selection of one of the items of quoted text in the source document; and i) displaying, through the user interface, a list of quoting documents that quote the selected item of quoted text.
12. A computerized method of identifying an item of text in a source document quoted in a quoting document, the method comprising: a) opening the quoting document that is stored on a tangible, non-transitory computer readable memory in a computer program operating on a computer; b) searching, using the computer program operating on the computer, the quoting document for a quotation and identifying the item of text as the quotation; c) determining the source document from text near the quotation in the quoting document; d) opening the source document on the computer; e) automatically locating the item of quoted text in the source document using the computer; f) storing, on a tangible, non-transitory computer readable memory, information in a data construct associated with the source document indicating the fact that the item of quoted text within the source document has been quoted by the quoting document as well as the location of the item of quoted text within the source document; g) when displaying the source document through a computer interface, recalling the stored location of the item of quoted text and highlighting the item of quoted text as different than other portions of the source document, wherein a technique for the highlighting is selected from a set comprising changing a color of a font for displayed text, creating a different colored background for displayed text, and otherwise visually emphasizing the importance of displayed text; h) receiving, through the computer interface, a user selection of one of the items of quoted text in the source document; and i) displaying, through the user interface, a list of quoting documents that quote the selected item of quoted text. 15. The method of claim 12 , wherein the data construct is external to the source document and indicates the location of the item of quoted text using an offset from a known location in the source document.