The present invention relates to a data structure for managing video data
and additional content data recorded on a recording medium. A recording
medium having data structure in accordance with the present invention
comprises a navigation area storing at least one first-typed object and
at least one second-typed object, wherein each of the objects indicates
at least one playlist to reproduce, the first-typed object includes at
least one navigation command for managing reproduction of main data
recorded on the recording medium, the second-typed object includes at
least one navigation command for managing reproduction of additional
content data to be reproduced with the main data, and the at least one
playlist indicated by the second-typed object includes reproducing
information related with the additional content data.