docs: def rect_helper(x0, y0, x1, y1):
          """Rectangle helper"""
          x0, y0, x1, y1 = force_int(x0, y0, x1, y1)
          if x0 > x1:
              x0, x1 = x1, x0
          if y0 > y1:
              y0, y1 = y1, y0
          return x0, y0, x1, y1