US Patent 7689546 Point of law search system and method

A “More Like This Headnote” search relates online headnotes intelligently so that users have the means to retrieve related headnotes quickly and easily. This is achieved by using a tailored search type in the search engine, which is designed to handle the text of a headnote as a search string. Retrieval logic then presents the search results to the user in a “Virtual Digest” view comprising related headnotes and case materials, sorted by user-selected options.