8. An apparatus for reproducing multimedia image data and text-based subtitle data recorded on a storage medium, the apparatus comprising: a reading unit configured to read text-based subtitle data comprising a style set and dialog information, the style set comprising a plurality of style information, the style information comprising: area information indicating an output area of the subtitles; and font information for designating a font type and a font size, and the dialog information comprising: text information comprising subtitle contents; reference style information indicating one style information, of the plurality of style information, to be applied to the subtitle contents included in the dialog information; partial style information to be applied to a portion of the subtitle contents included in the dialog information; and beginning and ending time information for designating the times of the subtitle contents, and a controller unit configured to: apply the one style information, of the plurality of style information, indicated by the reference style information to the subtitle contents included in the dialog information; and apply the partial style information to the portion of the subtitle contents included in the dialog information.
8. An apparatus for reproducing multimedia image data and text-based subtitle data recorded on a storage medium, the apparatus comprising: a reading unit configured to read text-based subtitle data comprising a style set and dialog information, the style set comprising a plurality of style information, the style information comprising: area information indicating an output area of the subtitles; and font information for designating a font type and a font size, and the dialog information comprising: text information comprising subtitle contents; reference style information indicating one style information, of the plurality of style information, to be applied to the subtitle contents included in the dialog information; partial style information to be applied to a portion of the subtitle contents included in the dialog information; and beginning and ending time information for designating the times of the subtitle contents, and a controller unit configured to: apply the one style information, of the plurality of style information, indicated by the reference style information to the subtitle contents included in the dialog information; and apply the partial style information to the portion of the subtitle contents included in the dialog information. 14. The apparatus as claimed in claim 8 , wherein the partial style information does not depend on the text information.