An optical recording medium for recording a predetermined command code at
a predetermined region of contents, an apparatus and method to play the
optical recording medium, which executes a predetermined command when the
contents are played so that the predetermined command is moved into
contents at a predetermined portion of a screen. The method of playing an
optical recording medium includes analyzing a signal that is read from
the optical recording medium, and searching whether a predetermined
command is recorded in a reserved region in a predetermined packet,
storing the searched predetermined command and executing the stored
predetermined command with a command execution key, and displaying the
result of the command that is executed with the command execution key on
a screen of the optical recording medium.