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10-10 Programming
LBL
(label) and
GOTO
(go to) are used together for branching.
LBL
(
PRGM CTL
, item 7) gives a label to a command line in a
program. The label is one character (A–Z, 0–9, or
q
).
LBL
label
GOTO
(
PRGM CTL
, item 8) causes the program to branch to
the command line with the same label.
GOTO
label
PRGM_
(
PRGM CTL
, item 9) calls (executes) other programs
as subroutines (pages 10
-
14). When you select
PRGM_
, it is
copied to the cursor location. You may type the letters of an
existing program name. You may also enter the name of a
program you have not yet created.
When encountered, the command executes the specified
program and then returns to the calling program. Execution
continues with the command following
PRGM_
programname
.
PRGM_
programname
RETURN
(
PRGM CTL
, item 0) quits the subroutine and returns
to the calling program (pages 10
-
14), even if it is encountered
within nested loops. (Any loops are ended.) There is an
implied
RETURN
at the end of any program called as a
subroutine. Within the main program,
RETURN
stops program
execution and returns to the Home screen.
STOP
(
PRGM CTL
, item A) stops execution of a program and
returns you to the Home screen.
STOP
is optional at the end
of a program. There is an implied stop at the end of the main
program that is being executed.
LBL
GOTO
PRGM_
RETURN
STOP