Navigation of hierarchical data

摘要

Apparatus for retrieving information from a hierarchically arranged information source comprises a display for displaying information and user selectable menu items corresponding to information available from said information source; a user input device for receiving user selections of displayed menu items; and a display controller. The display controller controls the display in dependence upon received user selections to display the menu items as history menu items and new menu items, and to display information corresponding to a most recently selected menu item. The history items indicate previously received user selections corresponding to navigation down levels of the hierarchy of said information source. The new menu items correspond to information available at a next level of the hierarchy of said information source.