64. The apparatus of claim 63 wherein the disabling device, responsive to a fourth quantity equalling or exceeding a third predetermined quantity, is further operative to enable the selection of the particular region, the third quantity being a function of the duration of a fourth period of intersection, the fourth period of intersection starting in response to a fourth starting location intersecting a certain one of the regions and ending in response to a fourth ending location intersecting the certain region, the fourth starting and fourth ending locations each being one of the successive locations indicated by the user movement.
64. The apparatus of claim 63 wherein the disabling device, responsive to a fourth quantity equalling or exceeding a third predetermined quantity, is further operative to enable the selection of the particular region, the third quantity being a function of the duration of a fourth period of intersection, the fourth period of intersection starting in response to a fourth starting location intersecting a certain one of the regions and ending in response to a fourth ending location intersecting the certain region, the fourth starting and fourth ending locations each being one of the successive locations indicated by the user movement. 65. The apparatus of claim 64 wherein the disabling device is further operative, responsive to the third quantity equalling or exceeding the second predetermined quantity, to disable all functions of the apparatus except the enabling function.