This type of keyword-based system was based on the keyword systems used by common research databases of the 1990s, such as Knowledge Index and CompuServe's file library, and is similar to the keywords Index for a MS Help file.
personal computer | Personal Computer | Personal digital assistant | Personal flotation device | IBM Personal Computer | Cosmos: A Personal Voyage | Personal protective equipment | Personal identification number | personal trainer | Personal advertisement | Personal protective equipment (PPE) | personal digital assistant | Local and Personal Acts of Parliament in the United Kingdom | Jillian Michaels (personal trainer) | IBM Personal Computer/AT | Personal Ordinariate of Our Lady of Walsingham | personal name | Personal Jesus | Personal Digital Cellular | Personal Appearance | Personal Affairs | Brighter than a Thousand Suns: A Personal History of the Atomic Scientists | Up Close & Personal | Personal trainer | Personal Memoirs of Ulysses S. Grant | Personal information manager | Personal Computer World | Personal Apostolic Administration of Saint John Mary Vianney | All India Muslim Personal Law Board | The Personal Jewel Collection of Elizabeth II |