Sony UPX-C21 Operating Instructions Manual page 47

To erase a protected picture
5
Press SET of the mode button.
The protect mark appears at the top right on the LCD, and the picture
is now protected from accidental erasure.
Hi-1 02
PROT E C T
Repeat steps 4 and 5 to protect the other pictures.
To finish setting the protection
Press MODE of the mode button.
If you wish to erase a protected picture, select the picture and repeat steps
4 and 5 to make the protect mark disappear, upon which the protection is
released.
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