Canon EOS 7D Mark II (G) Instruction Manual page 444

3 Setting Custom FunctionsN
Default Erase option
During image playback and image review after image capture, when
you press the <L> button, the erase menu appears (p.392). You can
set which option, [Cancel] or [Erase], is to be preselected on this
screen.
If [Erase] is set, you can just press <0> to quickly erase the image.
: [Cancel] selected
L : [Erase] selected
If [Erase] is set, be careful not to erase an image accidentally.
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