- J23-J24: distribution comparison, analog vs digital - K10-K11: image types, color depth (disabled) - L10-L11: JPEG pipeline, artifacts (L11 disabled) - M7-M8: image format comparison, GIF alternatives (M8 disabled) - N7-N8: frame types, video codec comparison (N8 disabled) - O14-O15: storage tech comparison, backup strategies (O15 disabled)