PURPOSE: To easily operate and manage a terminal by managing information of constituting devices in a detailed information file and automatically outputting a constitution drawing from the information file.
CONSTITUTION: An information input means 1-2 converts the form of inputted information to output it to a detailed information management file 4 for centralized management of constitution information for the purpose of storing inputted information in the detailed information management file 4. An information read means 5 reads in information related to the constitution from an environment file 2 and the detailed information file 4 and transfers it to a judgment means 6. This means 6 performs the judgment processing which recomposes this information to a form adapted to the output of the constitution diagram. An output means 7 receives information processed by the judgement means 6 and edits the constitution diagram to be outputted to an output device and outputs the edited results to the output device 8. Thus, the terminal is easily operated and managed.