Provided are: an acquisition section that acquires image data; a detection section that detects a marker portion indicated in the image data; a communication section that performs communication with either one or a plurality of external servers including at least one of a plurality of dictionary functions; a processing section that (i) specifies, from the dictionary functions, a dictionary function in accordance with a type of the marker portion, and (ii) causes the communication section to transmit, to the external server including the specified dictionary function, an instruction to search for a text indicated by the marker portion, and for information related to the text, by using the dictionary function; and a generation section that generates a glossary including the received information related to the text upon reception of the information related to the text as a search result from the external server by the communication section.