5. The method of claim 4 , further comprising, with each successive key selection of the input, highlighting, on the at least some keys, a linguistic element that is assigned to a key of each of a number of immediately preceding key selections and that is consistent with a correspondingly positioned linguistic element in the default language object.
5. The method of claim 4 , further comprising, with each successive key selection of the input, highlighting, on the at least some keys, a linguistic element that is assigned to a key of each of a number of immediately preceding key selections and that is consistent with a correspondingly positioned linguistic element in the default language object. 7. The method of claim 5 , further comprising employing a frequency of key selections of the input to determine a quantity of keys preceding the current key selection for which a linguistic element is highlighted, wherein the quantity increases as said frequency decreases.