4. The apparatus of claim 1 wherein the first indicating region intersects the second indicating region.
1. An apparatus for indicating the remaining dwell time required to select a selectable region, said apparatus comprising: (a) a display with respect to which the selectable region is capable of being at least partially delimited, the selectable region associated with a sequence of one or more graphic symbols including an ideograph, the sequence displayed on the display; (b) a movement related signal receiver for receiving a movement related signal responsive to user movement of a user, the user movement indicating successive locations with respect to the display; (c) an indicating device for: (1) modifying in a first manner the appearance of a first indicating region on the display responsive to a difference between: (i) a predetermined period; and (ii) the duration of a first period of intersection of two or more of the successive locations and the selectable region, the duration of the first period of intersection not equalling or exceeding the predetermined period; and (2) modifying in a second manner the appearance of a second indicating region on the display responsive to the duration of a second period of intersection of two or more of the successive locations and the selectable region equalling or exceeding the predetermined period, the second period of intersection including all of the first period of intersection; and (d) a selector for selecting the sequence responsive to the duration of the second period of intersection equalling or exceeding the predetermined period.