That's fascinating. Thanks for sharing.

It reminds me of "Posted"[0] signs that I've seen in lots of places in the southern US. Growing up in the Northeast, we didn't have such things[1].

[0] "Posted" is shorthand for "Private Property. No Trespassing." I get that the word "posted" means "I posted the sign. Pay attention or you might get arrested or shot." But I have no idea how the latter got shortened to the former. It's also an interesting regionalism, although not specifically related to legal codes and their taxonomy.

[1] Where I grew up we just had "No Trespassing" or "Private Property" signs.

Edit: expanded footnote [0].