Patent ID: 8331762

Claim:
A non-transitory information storage medium having a region to store data to be rendered as a text based subtitle, the data comprising: a style set comprising a plurality of stylegroups; and dialog information comprising script text information of the subtitle, wherein each stylegroup comprises a first style information which is used to render the script text information and a second style information which is used to render the script text information, the dialog information further comprises an identifier corresponding to a stylegroup among the plurality of stylegroups, the script text information is rendered using the first style information included in the stylegroup indicated by the identifier corresponding to the stylegroup, and when a user selects the second style information included in the indicated stylegroup for changing output style of the script text information, changed style information is formed by adding at least one from among the values for size, position and direction included in the selected second style information to a respective value included in the first style information of the indicated stylegroup, and the changed style information is used to render the script text information.