Metaphor environment control system

Claim 1

A metaphor environment control system of human interfaces of any application program for computers, which represents a plurality of metaphors that express various functions of the application program and presents a user with a pertinent function according to the user's operations comprising: a computer having a memory; wherein said memory contains an operational model which stores a user's operational information; a world model which stores the internal states of a plurality of metaphors to be manipulated; a display model which stores states in which said plurality of metaphors are displayed; an operation/display control block which rewrites said operational model depending upon the user's operation and changes the representations of said metaphors pertinently depending upon a change in said display model; an operational model/world model conversion rule which rewrites pertinent portions of said world and display models, using a change as a trigger in said operation/display control block for said operational model; a plurality of causal rules which rewrite other portions of said world model and a pertinent portion of said display model, using rewriting as a trigger in said world model, and allowing one world model to request to launch a plurality of said causal rules; and an ambiguity resolution block which selects any one of said plurality of causal rules, when they are launched.