Linguistic. Ubiquity for Firefox. Ensō. Ensō (c. 2000) by Kanjuro Shibata XX.
Some artists draw ensō with an opening in the circle, while others close the circle. In Zen Buddhism, an ensō (円相, , "circle"?) Is a circle that is hand-drawn in one or two uninhibited brushstrokes to express a moment when the mind is free to let the body create. Drawing ensō is a disciplined practice of Japanese ink painting—sumi-e (墨絵, "ink painting"?). The tools and mechanics of drawing the ensō are the same as those used in traditional Japanese calligraphy: One uses a brush (筆, fudé?)