Nikon Coolpix A10 - Manual (Page 101)

E 51
Re
fe
ren
ce
S
e
ct
io
n
Protect
The camera protects selected images from accidental deletion.
Select images to protect or cancel protection for previously protected images from the image
selection screen (
E52).
Note that formatting the camera’s internal memory or the memory card permanently deletes
protected files (
E65).
Press the c button (playback mode) M d button M Protect M k button