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