13. The system of claim 12 , wherein the mobile device to further modify the downloaded section and transmit the modified section to the server.
13. The system of claim 12 , wherein the mobile device to further modify the downloaded section and transmit the modified section to the server. 14. The system of claim 13 , wherein the server to receive the modified section, to aggregate the modified section with unmodified sections to form a revised document, and to transmit the revised document to the computing device.