5. The information processing device according to claim 4 , wherein the one or more processors add and output an explanatory note to the differential document based on the result of the comparison.
5. The information processing device according to claim 4 , wherein the one or more processors add and output an explanatory note to the differential document based on the result of the comparison. 6. The information processing device according to claim 5 , wherein if a document filled in by a user and a differential document filled in by the user are read in, the one or more processors merge the filled-in content on the document filled in by the user with the filled-in content on the differential document filled in by the user.