Canon POWERSHOT A480 User Manual page 92

You can protect important images so that they cannot be erased by the
camera (pp. 24, 93).
Select [Protect].
Press the MENU button, select the [] tab
and [Protect], and then press the @
button.
Protect the image.
Press the _ _ buttons to select an image,
then press the @ button.
Once protected, [] will appear.
Pressing the Q button again deselects
the image and [] will disappear.
To protect additional images, repeat the
above procedure.
Pressing the MENU button will restore the
menu screen.
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