A user enters a numeric string on a standby screen of a cellular telephone , and then presses a predetermined function key, {HEAD ~ the numeric string} being obtained by {TAIL ~ numerical conversion} of a keyword related to a piece of registration information, e.g. a destination e mail address, in accordance with an assignment relationship between characters and numerical keys 
A user enters a numeric string on a standby screen of a cellular telephone , and then presses a predetermined function key , { HEAD ~ the numeric string } being obtained by { TAIL ~ numerical conversion } of a keyword related to a piece of registration information , e.g. a destination e mail address , in accordance with an assignment relationship between characters and numerical keys
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH