1. A recording medium including text subtitle stream recorded by a recording apparatus and configured to be reproduced by a reproducing apparatus, the recording medium comprising: the text subtitle stream recorded by the recording apparatus and configured to be reproduced by a reproducing apparatus including a style segment defining at least one region style to be applied to at least one region, the style segment further defining at least one set of user control style for each of the at least one region style, each of the at least one set of user control style including at least one user control style being selectable for changing at least one of region presentation properties specified by a corresponding region style, wherein the style segment includes a player style flag recorded by the recording apparatus and configured to be reproduced by a reproducing apparatus indicating whether a player is permitted to use its own player style in addition to the at least one region style defined in the style segment of the text subtitle stream in the recording medium, wherein each of the at least one set of user control style specifies a direction and a delta of a change in the at least one of region presentation properties specified by the corresponding region style.