def display(self):
        #Put your display handler here
        #the current example draws the sensed robot in grey and the
        #commanded configurations in transparent green

        #this line with draw the world
        robot = motion.robot
        q = robot.getKlamptSensedPosition()
        self.world.robot(0).setConfig(q)
        self.world.robot(0).drawGL()
        GLWidgetProgram.display(self)

        #draw commanded configuration
        glEnable(GL_BLEND)
        glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA)
        glMaterialfv(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE,[0,1,0,0.5])
        q = robot.getKlamptCommandedPosition()
        self.world.robot(0).setConfig(q)
        self.world.robot(0).drawGL(False)
        glDisable(GL_BLEND)