mandelbrot {
    screen(0,0,640,480);
    xrange( -0.7454301,-0.7454289 );
    yrange( 0.1130085,0.1130076);
    maxiter( 2048 );
    spread_colours( 1,2047,255,255,255,255,0,0 );
    spread_colours( 0,0,0,0,0,0,0,0 );

    show( bsm );
    };

