19. An electronic calculator as in claim 13 wherein said editing keys include an insert control key for inserting one or more characters at selected positions within a line of one or more alphameric statements, entered into said buffer storage means from said keyboard input means or recalled thereto from said memory means, following actuation of at least one of said forward and backward control keys for single stepping to the selected position.
19. An electronic calculator as in claim 13 wherein said editing keys include an insert control key for inserting one or more characters at selected positions within a line of one or more alphameric statements, entered into said buffer storage means from said keyboard input means or recalled thereto from said memory means, following actuation of at least one of said forward and backward control keys for single stepping to the selected position. 20. An electronic calculator as in claim 19 wherein said processing means includes an insert routine responsive to actuation of said insert control key, following actuation of at least one of said forward and backward control keys for single stepping to a particular position of a displayed line of one or more alphameric statements, for inserting one or more additional characters.