Anthony Kram, Peter M Winter, Neil L Holman: Method and apparatus for assisting user of information retrieval systems. Keycom Electronic Publishing, Bernard L Kleinke, June 28, 1988: US04754326 (407 worldwide citation)

In information retrieval system includes a help feature, wherein a help key on a terminal can be actuated and a host computer responds by determining the identity of a page of basic information being transmitted at the time the help key is operated, determining the location of a page of subsidiary i ...

Peter M Winter, Neil L Holman, Anthony B Kram: Method and apparatus for retrieving information distributed over nonconsecutive pages. Keycom Electronic Publishing, Bernard L Kleinke, August 30, 1988: US04768144 (133 worldwide citation)

This specification describes an information retrieval system such as a videotext or teletext system in which data is stored in conventional tree format, and the user has the usual capability to move vertically through the tree structure, but also has a novel capability to browse horizontally thereth ...

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