| http://www.w3.org/ns/prov#value | - A method as in claim 44, in which:step (c) comprises controlling the second computer to send said request as further including a format for the graphic image; and step (d) comprises the substeps of:(d1) controlling the first computer to convert said section of the file into said format; and (d2) controlling the first computer to transmit said converted section of the file to the second computer. 4
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