Monitoring subject displaying device and method, and monitoring subject displaying computer program

A monitoring subject displaying method comprising:

• a step for storing, in a storing portion, an object, being an object for which a correspondence to the monitoring subject is defined, including a property that describes a status of the object, and a behavior for calculating a value for the property based on a value of a parameter of the monitoring subject;
• a step wherein a property updating portion updates, to the value calculated in accordance with the behavior, the value of the property of the object stored in the object storing portion;
• a step for recording, in a property update history storing portion, a history of property updating by the property updating portion;
• and
• a step wherein a displaying portion displays, on a displaying device, the object that is stored in the object storing portion, using a historic value for the property, stored in the property update history storing portion.

A non-transitory computer-readable medium embodying a computer program for causing a computer to function as a monitoring subject displaying device that comprises:

• a storing portion that stores an object, being an object for which a correspondence to the monitoring subject is defined, including a property that describes a status of the object, and a behavior for calculating a value for the property based on a value of a parameter of the monitoring subject;
• a property updating portion that updates, to the value calculated in accordance with the behavior, the value of the property of the object stored in the object storing portion;
• a property update history storing portion that stores a history of property updating by the property updating portion;
• and
• a displaying portion that displays, on a displaying device, the object that is stored in the object storing portion, using a historic value for the property, stored in the property update history storing portion.