A document processing system which makes document files while displaying the inputted document (such as characters, figures, symbols, etc.) has a display section to display the files of the documents which are divided on a page unit basis; an instructing device to prompt a predetermined display so that...http://www.google.com.tw/patents/US5289569?utm_source=gb-gplus-share專利 US5289569 - Document processing system capable of simultaneously displaying two continuous document pages in accordance with a selected binding position
