31. The electronic device as described in claim 30 wherein said method further comprises: automatically computing a location and a size of a second interface region of said surface wherein said second interface region is positioned adjacent to said marking and does not overlap said first interface region; associating a second computer function with said second interface region; and in response to a user selection of said second interface region, performing said second computer function on said data.
31. The electronic device as described in claim 30 wherein said method further comprises: automatically computing a location and a size of a second interface region of said surface wherein said second interface region is positioned adjacent to said marking and does not overlap said first interface region; associating a second computer function with said second interface region; and in response to a user selection of said second interface region, performing said second computer function on said data. 33. The electronic device as described in claim 31 wherein said first interface region is positioned spatially above said marking and wherein further said second interface region is positioned spatially under said marking.