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 including a plurality of hierarchy information items organized in a plurality of hierarchy 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 at selected hierarchy levels from the applications program (11) and transmits the received hierarchy information items to the display (15) of the user interface (14) for display, and responds to the event information by initiating selected operations in connection with the received hierarchy information.