Copies of a document having the same text part among documents stored in a document storage unit are read out from the document storage unit and a separation unit separates the comment parts from the text part. Resultantly, one text part and a plurality of comment parts are provided. A layout unit again...http://www.google.de/patents/US6088709?utm_source=gb-gplus-sharePatent US6088709 - Document processing unit for enabling collective seeing of comments added separately by different persons to document copies containing the same text part
