from cs1graphics import *

paper = Canvas(500,500)

paper.setBackgroundColor( (225,50,50) )
# allowed to break command across lines, so long as enclosed
# within matching parentheses
cross = Polygon(Point(200,100), Point(300,100),
                Point(300,200), Point(400,200),
                Point(400,300), Point(300,300),
                Point(300,400), Point(200,400),
                Point(200,300), Point(100,300),
                Point(100,200), Point(200,200))
cross.setFillColor('white')
cross.setBorderWidth(0)
paper.add(cross)