PROBLEM TO BE SOLVED: To collect review comments in an electronic document in a reviewer. SOLUTION: In an electronic document 102, review comments are input from a plurality of reviewers at a highlighted portion 104, and in a document system, review comments are aggregated in the plurality of reviewers. Ask. The reviewer inputs the aggregated comment from the input field 130. The aggregated comments input and received by each reviewer are displayed in the window 120 of the screen 100. The aggregation process ends when the aggregation complete button 136 is pressed. [Selection diagram] FIG. 10
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