Preparing of information about a content source is disclosed. One method in accordance with the information preparing creates item information on a first component pertaining to an arbitrary content source, incorporates the created information on the first component into a first structure element (e.g., tag), creates a second structure element containing information making display layout information for the arbitrary content source accessible, creates information on at least one component pertaining to the arbitrary content source other than the first component, and incorporates the created information on the at least one component into at least one third structure element included within the second structure element.