SYSTEM FOR MANAGING HIERARCHICAL INFORMATION IN A DIGITAL DATA PROCESSING SYSTEM

摘要

A system for use in conjunction with a digital data processing system includes an applications program (11), a user interface (14) and a hierarchy information management system (10). The applications program (11) generates an information hierarchy (24) including a plurality of hierarchy information items organized in a plurality of of heirarchy levels. The user interface includes a display (15) for displaying information to a user and an event initiator (16), such as, for example, a keyboard or a mouse for generating event information. The hierarchy information management system (10) receives hierarchy information items (24) at selected hierarchy levels from said applications means and transmits the received hierarchy informations items (25, 27) to the display of said user interface means for display, and responds to the event information for initiating selected operations in connection with said received hierarchy information.