warn 'initialising from INSECURE source /dev/zero' ;;
o) let OPTIMIZING_LEVEL_=$OPTIMIZING_LEVEL_+1
OPTIMIZED_MODE_SET_='true' ;;
y) VERIFY_PW_="--verify-passphrase" ;;
f) FORCE_='true' ;;
warn 'initialising from INSECURE source /dev/zero' ;;
o) let OPTIMIZING_LEVEL_=$OPTIMIZING_LEVEL_+1
OPTIMIZED_MODE_SET_='true' ;;
y) VERIFY_PW_="--verify-passphrase" ;;
f) FORCE_='true' ;;