What about property boundaries?!
Roadside boundary signs
Let's say the File:NicholasCountySignWV.jpg sign is located 100 meters from where the dotted line on the map is. How would one mark the sign?
Let's also say instead normally the boundary File:NicholasCountySignWV.jpg represents is unmarked. But here the local chieftains have pitched in and erected a sign. How would one mark it in this case?
Also the sign might be one sided, or two sided, saying both entity A and B...
I've seen (e.g. in Western Sahara) the use of boundary=disputed
How should we treat these cases?