1. A non-transitory, tangible, computer-readable storage medium containing a story index of story elements that are referenced in a story both by name and by language that does not include the name, the story index being readable by a story presentation application program running in a story presentation device, the story index comprising for each story element: ID information identifying the story element; and reference information identifying locations in the story at which the story element is referenced by its name and locations in the story at which the story element is referenced by language that does not include its name, the information identifying each location including information that is sufficient to enable the story presentation application program to display the reference to the story element at the referenced location upon request of a viewer.