Optical disc for coordinating the use of special reproduction functions and a reproduction device for the optical disc

An optical disc for use with a reproduction apparatus, comprising

• a data region for storing a plurality of video objects;
• and
• an index region for storing a sequence information entry which defines a sequence of video objects, the sequence information entry indicating a reproduction order and positions of the video objects included in the sequence,
• wherein the plurality of video objects include one or more video objects that provide image data representative of a viewer option that can be exercised by a user operation during the reproduction of the video object,
• wherein the index region further stores a sequence-management information entry which indicates whether or not a first user operation to the reproduction apparatus during reproduction of the video objects included in the sequence is prohibited,
• wherein each of the video objects includes at least one block, and the block includes a video segment and segment-management information for the video segment which indicates whether or not, during the display of image data representative of the viewer option, a second user operation is prohibited during reproduction of the video segment.