4. The method of claim 1, wherein the first set of the keys has at least one cursor movement key and the second set of the keys includes a set of at least two selection keys, wherein step (b) includes the step of highlighting the selected one of the groups in response to actuation of said at least one cursor movement key, and wherein step (c) includes the step of selecting said character representation within said selected one of the groups in response to actuation of one of the selection keys.
4. The method of claim 1, wherein the first set of the keys has at least one cursor movement key and the second set of the keys includes a set of at least two selection keys, wherein step (b) includes the step of highlighting the selected one of the groups in response to actuation of said at least one cursor movement key, and wherein step (c) includes the step of selecting said character representation within said selected one of the groups in response to actuation of one of the selection keys. 5. The method of claim 4, wherein the set of at least two selection keys consists of four selection keys.