circle casting

I've looked for circle casting but I couldn't find a straight answer.Can anyone help?

It would be helpful if you could elaborate on what it is that you dont understand about it?

If you haven't read this article yet then maybe it may help you.

http://www.spellsofmagic.com/coven_ritual.html?ritual=1644&coven=108

Love and Light

There is also this thread that I made as well- http://www.spellsofmagic.com/read_post.html?post=275195

thanks guys