Atari 400 User Manual page 160

Now press RETURN to send the command to
the computer. But how can you find out if the
computer erased the program we were using?
Type
LIST
The LIST command is displayed.
SCREEN 10
Now press the RETURN key. You simply get the
READY message. Since no program is listed; you
know that the program was erased from the
computer's working memory.
SCREEN 11
Use the NEW command before typing any
pro-
gram into your computer to be sure that the
computer's memory is cleared of any previous
program.
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