Radio Shack TRS-80 Model 100 Basic Manual page 13

Note that the program you wrote "scrolls up and off" the screen as the program
began printing. If you wish to see the program as you wrote
it
again, enter the
command:
LIST
or simply press the LIST Function Key,
CEID.
In either case, the program will appear
on the Display again.
List
10 PRINT "RADIO SHACK MODEL 100"
20
GOTO 10
Ok
•
Execute this program again with the RUN command or by pressing (f!l.
After letting the program run a few seconds, terminate it by pressing
~.
This time after pressing
~,
enter the command:
CONT
As you can see, the program resumes execution. The CONT command is used to
CONTinue execution after the program has been "broken." Execution will start at the
same place where the program was interrupted.
Experiment #3 Simple Editing
Here's the program from the previous experiment:
1121 PRINT "RADIO SHACK MODEL 1121121"
2121 GOTO 1121
Suppose you want to change line 10 so that the message reads:
I LOVE MY MODEL 1121121
This can be done by retyping line 10 entirely:
1121 PRINT "I LOVE MY MODEL 1121121"
(ENTER)
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