45:8 · The same basic structure as the above, but slightly enlarged, is used in the US, British, French and Swedish systems of hobo signs to mean prison or avoid this place-risk of being arrested.
    Compare with the US and French hobo sign meaning a crime has been comitted here so this place is not safe for strangers.
    In heraldic contexts this pattern repeated so as to cover a given area signifies the colour black on a picture of a coat of arms.