Why does pap Finn have a cross carved in the bottom of his boot heel?

Pap Finn carves a cross in the bottom of his boot heel to mark his money and hide it from others. In "The Adventures of Huckleberry Finn," this detail reflects his scheming nature and desire to keep his possessions secret, revealing his character as manipulative and selfish. The cross symbolizes both a form of identification and a means of deception, showcasing the broader themes of morality and social critique in the novel.