A template file defines a video material data, a first still picture material data, a second still picture material data and text data, and a display area for each of the material data. A presentation file defines the template file and a correlation between each of the display areas and each material data. Based on the template file and the presentation file, an information display device combines and displays as a program the video material data, the first still picture material data, the second still picture material data, and the text data in their respective display areas.