An information processing apparatus includes a generating unit for generating a ClipMark formed by a mark specifying a characteristic picture extracted from an input AV stream for providing management information for supervising the AV stream and for generating a PlayListMark. This makes it possible to facilitate meltdown of the fuse. The invention also relates to the collar bag and the device to carry out the above-mentioned method. In displaying a ladder diagram after the setting of language is completed, as for an address for which there is any comment of the preset language, such comment is displayed.