A portable terminal carried by an operator of a target apparatus includes a communicating device for conducting wireless communication and a first information acquiring device for acquiring first information related to the target apparatus from the target apparatus via the communicating device. The portable terminal also includes a second information sending device for sending second information to at least one external information terminal via the communicating device based on the first information. Further, the portable terminal includes a third information acquiring device for acquiring third information from at least one external information terminal responding to the second information via the communicating device and an information outputting device for outputting an information output based on the third information.

 
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