7. An electronic calculator as in claim 5 wherein: a separate line number is associated with each line of one or more alphameric statements stored in said memory means; and said processing means includes an interpreter routine responsive to actuation of said first control key, followed by actuation of one or more other keys representing a particular line number, for computing the current address in said memory means of the line of one or more alphameric statements associated with that line number, and an uncompiler routine responsive to actuation of said second control key for nondestructively transferring the line of one or more alphameric statements specified by that address from said memory means to said buffer storage means.
5. An electronic calculator as in claim 4 wherein: said keyboard input means includes a first control key operable with one or more other keys for designating a particular line of one or more alphameric statements stored in said memory means, and a second control key for initiating nondestructive recall of a designated line of one or more alphameric statements from said memory means to said buffer storage means; and said processing means is responsive to actuation of said second control key, following actuation of said first control key and one or more other keys designating a particular line of one or more alphameric statements stored in said memory means, for nondestructively transferring that line of one or more alphameric statements from said memory means to said buffer storage means to enable the user to observe a display thereof by said alphameric output display means.