A system and method for retrieving the contents of a digital information system by multi-level categorization is disclosed. The system uses a file table, a category table, and a category bundling table. Headings and directions are displayed on navigation pages to guide the user to the desired file. The...http://www.google.de/patents/US5920864?utm_source=gb-gplus-sharePatent US5920864 - Multi-level category dynamic bundling for content distribution
