mandelbrot {
    xrange( -1.27588,-1.27448 );
    yrange( -0.189,-0.1876 );
    maxiter( 1024 );
    spread_colours( 0,127,255,255,255,0,0,127 );
    spread_colours( 128,511,0,0,127,255,255,0 );
    spread_colours( 512,1023,255,255,0,0,255,0 );
    spread_colours( 0,0,0,0,0,0,0,0 );

    show( bsm );
    };

