Enso is the Japanese word for circle. A circle painted in a single brushstroke is a Zen symbol of the true nature of existence and enlightenment.
Enso is a central theme of Zen art. It represents infinity, simplicity, strength.
http://en.wikipedia.org/wiki/Enso
http://www.byzant.com/symbols/enso.asp
[quote=∓quot;wikipedia"\]Some artists draw Enso with an opening in the circle, while others complete the circle. For the former, the opening symbolizes that the Enso is not separate, but is part of something greater.[/quote]
That said, our enso would definatly be panted with an opening

