1. At least one digital data storage media tangibly embodying a program of machine-readable instructions executable by a digital data processing apparatus to perform operations to manage an interactive display system including a touch-sensitive display, the operations comprising: establishing a first image and at least one secondary images, each image representing various spatial coordinates, the spatial coordinates overlapping at least in part such that each image comprises an alternate depiction of subject matter common to all of the images; presenting the first image upon the display; responsive to prescribed user input including contact with the display, performing further operations comprising: updating imagery presented by the display to integrate a region of at least one of the secondary images into the display; where each integrated region has substantially identical represented coordinates as a counterpart region of the first image; where each point on the display continues to depict imagery corresponding to the same spatial coordinates regardless of which image is being shown; where the updating operation comprises reducing visibility of the counterpart region of the first image, and substantially simultaneously increasing visibility of the integrated region of the secondary image.