A technique for performing an information search relate to parts included in a circuit diagram or a board diagram displayed on a display screen. Network connection destination information, which includes URL information for a predetermined server, a type of information to be transmitted to the server and a predetermined transmission method, are read from a local hard disk. When a predetermined manipulation is performed for a graphics primitive, the network connection destination information is referred to and menu information that enables selection of a predetermined server is generated and displayed. Further, when a predetermined server is selected on the menu information, a part corresponding to parts identification information designated for the selected graphics primitive is searched for, information therefor is obtained, a search request is issued to the predetermined server, and the search results are displayed on a display device.