Apple II User Manual

                values you may become satisfied that your

                program is functioning correctly.  You

                should then type in CONT to Continue

                executing your program where it left off, or

                type a direct GOTO statement to resume

                execution of the program at a different line.

                You could also use assignment statements

                to set some of your variables to different

                values.  Remember, if you interrupt a

                program with the F1 key and expect to

                continue it later, you must not get any

                errors or type in any new program lines.

                If you do, you won't be able to continue

                and will get a "CN" (continue not) error.

                It is impossible to continue a direct

                command.  CONT always resumes

                execution at the next statement to be

                executed in your program when F1 was

                typed.

STATEMENT       SYNTAX/FUNCTION                                         EXAMPLE

FRE             FRE (expression)                                        270 PRINT FRE(0)

                Gives the number of memory bytes

                currently unused by BASIC.  A dummy

                operand--0 or 1--must be used.

STATEMENT       SYNTAX/FUNCTION                                         EXAMPLE

LIST            LIST [[start line] [-[end line]]]

                Lists current program optionally starting at

                specified line.  List can be interrupted with

                the F1 key.  (BASIC will finish listing the

                current line.)

                Lists entire program                                    LIST

                Lists just line 100.                                    LIST 100

                Lists lines 100 to 1000.                                LIST 100-1000

                Lists from current line to line 1000.                   LIST -1000

                Lists from line 100 to end of program.                  LIST 100-

STATEMENT       SYNTAX/FUNCTION                                         EXAMPLE

LOAD            LOAD                                                    LOAD

                Loads a BASIC program from the cassette

                tape.  When done, the LOAD will display

                the cursor.  See Appendix G for more

                information.

STATEMENT       SYNTAX/FUNCTION                                         EXAMPLE

NEW             NEW                                                     NEW

                Deletes current program and all variables.

STATEMENT       SYNTAX/FUNCTION                                         EXAMPLE

PEEK            PEEK (address)                                          356 PRINT PEEK(I)

                The PEEK function returns the contents of

                memory address I in decimal.  The value

                returned will be =>0 and <=255.  If I is

                >65535 or <0, an FC error will occur.

                An attempt to read a non-existent memory

                address will return an unknown value.

STATEMENT       SYNTAX/FUNCTION                                         EXAMPLE