A portable terminal has a memory having a program and an external program generating content data. The program transmits output instruction information for instructing to output content data to an output apparatus. The program determines whether previous content data is stored, displays a screen including a program object of the external program and a content object of the previous content data, and receives an input operation on the screen. When the program object is designated, the program activates the external program so as to cause the external program of the program object to newly generate the content data. When the content object is designated, the program receives, as target content data, the previous content data of the content object from the external program generating the previous content data, and transmits, to the output apparatus, the output instruction information instructing to execute the output operation for the target content data.