code: def drawCircle(page, center, radius, color=None, fill=None,
                 morph=None, dashes=None, width=1,
                 roundCap=False, overlay=True):
      
      img = page.newShape()
      Q = img.drawCircle(Point(center), radius)
      img.finish(color=color, fill=fill, dashes=dashes, width=width,
                 roundCap=roundCap, morph=morph)
      img.commit(overlay)
      return Q
docs: Draw a circle given its center and radius.