Thanks, Shallowford. I don't mind you pointing out my mistakes. And it wasn't a typo, just a mistake I made. Gravel isn't a word I use often and I thought I got it right. Though, actually, it's quite a funny mistake, coming to think about it. Reminds me of the historical "walk to Canossa" (a medivial German Emperor who lived about 1140 had to do some groveling duty, because he started an argument with the Pope. Not a wise decision.
