A synopsis encapsulates information about a file in the form of indexed attributes and values. Extensible type system. A collection of synopses can be combined into a digest. The digest provides the result of doing a search and this can be saved. System for locating and organizing information.
Focal challenge is complexibility and scalability in wide-area information system.
There are a number of patents I've read that have some relationship to what I'm doing. For now, here's a list of URLs.