Brother P-Touch 580C User Manual page 112

TO DELETE A FILE FROM THE MEMORY:
(1) Hold down the CODE key and press the M.DEL key.
(2) Press the 5 and 6 keys until the file you want to delete is displayed.
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Hold down the CODE key and press the SPACE key to select all the
files in the memory. If you then decide not to delete all of the files in
the memory, hold down the CODE key and press the CLEAR key.
(3) Press the RETURN key. The message "OK TO DELETE?" or "CLEAR ALL?"
will be displayed.
(4) To confirm, press the RETURN key again. The selected file or files are deleted.
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Press the CANSEL key or the CODE and M.DEL keys at any time to leave
Memory delete mode without deleting the selected file or files.
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