A general purpose system and method for associating annotations, modifications, or other information with a web-viewable document is disclosed. An embodiment of the system and method includes the use of a "redirector." A user attempting to access a document at a particular web address, sends a request...http://www.google.com.tw/patents/US6571295?utm_source=gb-gplus-share專利 US6571295 - Web page annotating and processing
