Patent ID: 8903221

Claim:
A non-transitory machine readable medium that stores instructions for accessing and playing a multimedia work stored on the medium, wherein when the instructions are executed by a control unit: display, by the control unit, a collection of pages associated with the multimedia work and stored on the medium and distinct from the multimedia work, wherein the pages include a set of links that are selectable through user input and logically link the pages; provide a navigation means to allow selection, by a user, the links on the pages; and play, by the control unit, the multimedia work in response to the selection of a predetermined combination of navigation choices between links on the pages, wherein successive navigation choices that do not correspond to a predetermined combination of navigation choices do not allow the multimedia work to be played by the control unit, wherein the collection of pages comprises at least a reference page, a first page, and a second page, wherein the first page and the second page have an identical appearance, wherein the reference page includes a first link to the first page and a second link to the second page, wherein the first link is part of the predetermined combination of navigation choices and the second link is not part of the predetermined combination of navigation choices.