3. The apparatus of claim 2 , wherein the control unit is further configured to output information indicating the plurality of editable units through the display unit.
3. The apparatus of claim 2 , wherein the control unit is further configured to output information indicating the plurality of editable units through the display unit. 4. The apparatus of claim 3 , wherein the information indicating the plurality of editable units comprises visual indication information that is used to display the word sequence such that the word sequence is differentiated into units of editable words.