"Louise Bremner" <dame_zumari@yahoo.com> wrote ...
> Akkerchally, we're wondering if they'd realised they'd placed the wall
> too far within their own side of the boundary.

Aha.  Over here in good old イギリス (however you define it)
I think there's some rule that if your boundary has been at a certain 
point for a long enough period of time unchallenged whoever might be 
said to own that land on paper doesn't get to get it back.*

I think we gained half an air-raid shelter and a corner of a field
that way ('twas like it when we got it, 'onest guv).

* IANAL, YMMV