document: A browser for browsing the past web We describe a browser for the past web . It can retrieve data from multiple past web resources and features a passive browsing style based on change detection and presentation . The browser shows past pages one by one along a time line . The parts that were changed between consecutive page versions are animated to reflect their deletion or insertion , thereby drawing the user 's attention to them . The browser enables automatic skipping of changeless periods and filtered browsing based on user specified query .
doc_bio_tags: O O O O O B I O O O O O O B I O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O