16. The electronic device of claim 15 , wherein the visual indication varies in dependence on a predictive rank of each of the at least one set of predicted input characters for which a visual indication is displayed.
17. The electronic device of claim 16 , wherein the visual indication of a first key of the virtual keyboard of a subsequent candidate input character of a first set of predicted input characters having a higher predictive rank provides a greater emphasis than the visual indication of a character of a second key of the virtual keyboard of a subsequent candidate input character of a second set of predicted input characters having a lower predictive rank.