Apparatus and methods are disclosed for processing printed material to
provide an index of locations within the printed material that can be
associated with external actions such as displaying a graphical image,
providing an audio or video output, or providing a multimedia output. The
associations are stored in a database. Apparatus and methods are also
disclosed that allow a user to image the printed material and by
indicating a desired location within the printed material can cause one
of the associated actions to be executed.