<p>This object aims to easily perform an input operation relating to decorated characters when a user intends to create a sentence containing the decorated characters. A decorated character string generation apparatus is provided with an input operation part (10) which can be operated by the user for inputting characters and a character information conversion part (20) which converts primary character information such as Japanese kana characters, etc. inputted from the input operation part to secondary character information such as Japanese kanji characters. The apparatus is provided with a decoration processing control part (30) which, in the case of detecting predetermined definite operation of the secondary character information converted by the character information conversion part (20), starts a decoration processing mode for decorating the characters containing the secondary character information. The decorating processing is started by long pressing of a definition key. Specific characters are detected from in the sentence and a range to be decorated is determined automatically.</p>
