Well, that doesn't seem very useful to me.
Boundaries and open fields are the same.
Walls and I mean Fort Knox type walls, do more than anything else will.
_________________
<a href="http://www.kia-tickers.com><img src="http://www.kia-tickers.com/bday/ticker/19901105/+0/4/1/name/r55/s37/bday.png" border="0"> </a>